I need some help with simple algebra I think I am stupid, please. | Mathematics | Page 1

pastel brambleBOT Jul 20, 2024, 11:23 AM

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elfin yew Jul 20, 2024, 11:25 AM

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I don't know if the +7 is part of the same operation to find the end value, or if it's what is the base + 7

dry dune Jul 20, 2024, 11:27 AM

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answer should be 10.87

elfin yew Jul 20, 2024, 11:27 AM

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dry dune answer should be 10.87

how so please?

dry dune Jul 20, 2024, 11:27 AM

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my bad it 13

elfin yew Jul 20, 2024, 11:28 AM

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yeah but what if the +7 is part of the problem to find the end value

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and not added onto the base

dry dune Jul 20, 2024, 11:29 AM

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it 13

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tf let me calculate again

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3^/54x4 = 3^/216 =6

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so 6 +7 is 13

elfin yew Jul 20, 2024, 11:31 AM

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yes but what if the +7 is in the initial equation

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like look at this one

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dry dune Jul 20, 2024, 11:32 AM

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u mean the 7 is in the root?

elfin yew Jul 20, 2024, 11:32 AM

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wrong one

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mb

dry dune Jul 20, 2024, 11:32 AM

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my english not really good

elfin yew Jul 20, 2024, 11:34 AM

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you were right

dry dune Jul 20, 2024, 11:34 AM

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sent me the problem i solve for u

elfin yew Jul 20, 2024, 11:34 AM

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thank you

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what is your main language?

dry dune Jul 20, 2024, 11:34 AM

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cambodia brother

elfin yew Jul 20, 2024, 11:35 AM

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តើអ្នកដឹងថា បូក 7 ត្រូវបានបន្ថែមទៅមូលដ្ឋានជំនួសឱ្យតម្លៃចុងក្រោយដោយរបៀបណា?

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I am going to sleep, thank you very much for the help

fading onyx Jul 20, 2024, 11:40 AM

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@elfin yew

elfin yew Jul 20, 2024, 11:40 AM

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yo

fading onyx Jul 20, 2024, 11:40 AM

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First you have to find the cube root

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And do the multiplication

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And addition

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And that is cube root

elfin yew Jul 20, 2024, 11:41 AM

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yes

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but

fading onyx Jul 20, 2024, 11:41 AM

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@elfin yew wait wait

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I got it

elfin yew Jul 20, 2024, 11:41 AM

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how are you supposed to know if the +7 is to find the end value or the base

swift nymph Jul 20, 2024, 11:41 AM

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Anything under the radical

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is the "base"

elfin yew Jul 20, 2024, 11:42 AM

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so only what is under the radical?

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even if basic order of operations would dictate for something outside the radical to go first?

swift nymph Jul 20, 2024, 11:42 AM

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yes

elfin yew Jul 20, 2024, 11:42 AM

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Like what if under the radical it was 54+4 instead of 54x4 and then it was 54+4 x 2 but the x2 is outside the radical

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you're supposed to do multiplication before addition

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but you're supposed to do radicals before multiplication

swift nymph Jul 20, 2024, 11:43 AM

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stuff inside the radical comes before multiplication

elfin yew Jul 20, 2024, 11:43 AM

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Ohhhhhhhhhhhh

swift nymph Jul 20, 2024, 11:43 AM

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PEMDAS (E)-> exponent and the radical is an exponent

elfin yew Jul 20, 2024, 11:43 AM

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it makes sense now thank you

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we use BEDMSA where I live

swift nymph Jul 20, 2024, 11:43 AM

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elfin yew we use BEDMSA where I live

oh

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what does that stand for?

elfin yew Jul 20, 2024, 11:44 AM

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brackets, exponents, division, multiplication, subtraction, addition

swift nymph Jul 20, 2024, 11:44 AM

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oh lol

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yeah

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so exponents bfr division, multiplication

elfin yew Jul 20, 2024, 11:44 AM

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I learnt PEMDAS too so I was confused when I heard we're supposed to do division before multiplication

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and subtraction before addition

dry dune Jul 20, 2024, 11:45 AM

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can u understand this

elfin yew Jul 20, 2024, 11:46 AM

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sorry no

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I think I understand now though

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so this would be 0?

dry dune Jul 20, 2024, 11:48 AM

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yes

elfin yew Jul 20, 2024, 11:48 AM

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thank you so much everyone for your help

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I understand now

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@fading onyx @dry dune @swift nymph

fading onyx Jul 20, 2024, 11:50 AM

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@elfin yew you can imagine radical as a parentheses and do first inside the radical

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And then solve the radical and add

elfin yew Jul 20, 2024, 11:52 AM

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one more thing by the way

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I am not sure how this works

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wait let me cook

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-5 squared is -25

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3 squared is 9

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4 squared is 16

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16 x -25 is - 400

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9 + - 400 = -391

fading onyx Jul 20, 2024, 11:54 AM

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Yes

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@elfin yew you should follow pemdas

elfin yew Jul 20, 2024, 11:54 AM

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I am Australian

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we use BEDMSA

fading onyx Jul 20, 2024, 11:54 AM

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elfin yew we use BEDMSA

Oh ok

elfin yew Jul 20, 2024, 11:55 AM

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why does it say the answer is 409

fading onyx Jul 20, 2024, 11:55 AM

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B = inside brackets, E = exponents, D = division, M = Multiplication, S = Subtraction, A = addition

fading onyx Jul 20, 2024, 11:57 AM

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elfin yew why does it say the answer is 409

Because 16 × x = 16x

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And (-5)² is -25

elfin yew Jul 20, 2024, 11:57 AM

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what do you mean 16x

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it's 16 x -25

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which is -400

fading onyx Jul 20, 2024, 11:58 AM

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elfin yew what do you mean 16x

x isn't a variable in this expression?

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It written like a variable

elfin yew Jul 20, 2024, 11:58 AM

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fading onyx Jul 20, 2024, 11:59 AM

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Bruh

elfin yew Jul 20, 2024, 11:59 AM

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?

fading onyx Jul 20, 2024, 11:59 AM

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@elfin yew I taught it was variable

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thought*

elfin yew Jul 20, 2024, 11:59 AM

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idk man I am a noob at maths

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I just started

fading onyx Jul 20, 2024, 11:59 AM

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elfin yew

As I mentioned just use pemdas,

elfin yew Jul 20, 2024, 12:00 PM

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idk why the answer is 409 instead of -391

fading onyx Jul 20, 2024, 12:00 PM

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elfin yew why does it say the answer is 409

This one is incorrect maybe it took x as a variable

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@elfin yew it took multiplication as a variable

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It was incorrect

elfin yew Jul 20, 2024, 12:01 PM

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fading onyx Jul 20, 2024, 12:02 PM

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elfin yew

Calculator doesn't use pemdas

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Wait

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We made a mistake

elfin yew Jul 20, 2024, 12:03 PM

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?

fading onyx Jul 20, 2024, 12:03 PM

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@elfin yew (-5)(-5) is 25

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Not -25

elfin yew Jul 20, 2024, 12:03 PM

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OHHHHHHHHHHHH

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YOU'RE RIGHT

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OMG

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YOU'RE A GENIUS

fading onyx Jul 20, 2024, 12:03 PM

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Because + × + is positive

elfin yew Jul 20, 2024, 12:03 PM

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YEAHHHHH

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NO I UNDERSTAND NOW

fading onyx Jul 20, 2024, 12:04 PM

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elfin yew YOU'RE A GENIUS

Luckily I found the mistake

elfin yew Jul 20, 2024, 12:04 PM

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yes bro

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I was so confused

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attention to detail

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thanks so much for the help man my high distinctions are coming 🙏

fading onyx Jul 20, 2024, 12:04 PM

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@elfin yew use prealgebra by mcgraw hill book

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To learn prealgebra

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It is best one

elfin yew Jul 20, 2024, 12:05 PM

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if it uses American pemdas I will have to pass

fading onyx Jul 20, 2024, 12:05 PM

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I'm currently finished prealgebra because of this

fading onyx Jul 20, 2024, 12:05 PM

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elfin yew if it uses American pemdas I will have to pass

Just try to adapt with pemdas, because in most of area pemdas are used

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In youtube tutorials

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And more

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Even I'm indian, I been through bodmas

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But pemdas is like world wide kne

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one*

elfin yew Jul 20, 2024, 12:08 PM

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thanks a lot man

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have a good day/night

swift nymph Jul 20, 2024, 12:11 PM

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elfin yew -5 squared is -25

-5 squared is 25

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oh wait already answered

elfin yew Jul 20, 2024, 12:18 PM

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.close

#I need some help with simple algebra I think I am stupid, please.