i need help math 11th class im kinda slow at this | Mathematics | Page 1

edgy groveBOT Nov 23, 2025, 9:48 PM

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barren dragon Nov 23, 2025, 9:50 PM

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help

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tomorow is my test pls

glad egret Nov 23, 2025, 9:52 PM

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Hi

fair fable Nov 23, 2025, 9:53 PM

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common denominator

barren dragon Nov 23, 2025, 9:53 PM

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hi

fair fable Nov 23, 2025, 9:53 PM

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how can you express 4 as a fraction that has a denominator of either 3 or 2?

glad egret Nov 23, 2025, 9:53 PM

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(2x + 1) / 3 − 4 = (x − 5) / 2
1. Move the 4 to the other side
(2x + 1) / 3 = (x − 5) / 2 + 4
2. Convert 4 into a fraction with denominator 2
4 = 8 / 2

barren dragon Nov 23, 2025, 9:54 PM

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huh i did multiply by 3

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then kinda forgot how to multiply the 2

fair fable Nov 23, 2025, 9:54 PM

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you dont need to

glad egret Nov 23, 2025, 9:54 PM

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wait

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I'll use paper

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For u

barren dragon Nov 23, 2025, 9:54 PM

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thx

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..

glad egret Nov 23, 2025, 10:11 PM

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barren dragon Nov 23, 2025, 10:12 PM

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ooooh ye multiply by 6 is easir your right

glad egret Nov 23, 2025, 10:13 PM

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multiply by 6 because it is the smallest number that both 3 and 2 divide into, so it removes both fractions in one step.

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And after that it becomes very easy

barren dragon Nov 23, 2025, 10:13 PM

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yo im sry but do you can explain me this too..

glad egret Nov 23, 2025, 10:13 PM

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You need to think

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There are lots of ways

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Obviously to do it.

barren dragon Nov 23, 2025, 10:13 PM

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ye ur right

glad egret Nov 23, 2025, 10:14 PM

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Yes

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You need solutions to every one ??

barren dragon Nov 23, 2025, 10:16 PM

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nah

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if u can explain me quick then easy

fair fable Nov 23, 2025, 10:17 PM

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to simplify surds you want to find the largest factor of the number in the surd that is a square number

barren dragon Nov 23, 2025, 10:17 PM

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the thing is i used to know how to do all of this but forgot but if i understood it once again then my brain automatically works

barren dragon Nov 23, 2025, 10:17 PM

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fair fable to simplify surds you want to find the largest factor of the number in the surd ...

ye

glad egret Nov 23, 2025, 10:18 PM

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@barren dragon

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Simple mathematical trick

fair fable Nov 23, 2025, 10:19 PM

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$\sqrt{a}\sqrt{b}=\sqrt{ab}$

brittle shellBOT Nov 23, 2025, 10:19 PM

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ImOakley

fair fable Nov 23, 2025, 10:20 PM

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so the largest square factor of 180 is 36

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36 x 5 = 180

glad egret Nov 23, 2025, 10:20 PM

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Yesss

barren dragon Nov 23, 2025, 10:20 PM

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but how you know its 36

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wt did u calculate

glad egret Nov 23, 2025, 10:21 PM

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Do you know lcm ??

fair fable Nov 23, 2025, 10:21 PM

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just go through the square numbers and divide 180 by them

glad egret Nov 23, 2025, 10:21 PM

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Yeah

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Adding and subtracting

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Wait

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Logic is this btw

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Thou

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We can't do this

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Ok

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Cause what if number is very long

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I'm bad at articulation lol

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@fair fable ) help

barren dragon Nov 23, 2025, 10:23 PM

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wait cant i just divide by 10

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then 18 plus 18

glad egret Nov 23, 2025, 10:23 PM

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Perfect square only

fair fable Nov 23, 2025, 10:23 PM

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sure but it can bring problems

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do you know prime factorisation?

glad egret Nov 23, 2025, 10:24 PM

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That's what I did

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I forgot the name lol

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Called it lcm

barren dragon Nov 23, 2025, 10:24 PM

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ah im from germany so i dont rlly know the main words in english thats the thing

fair fable Nov 23, 2025, 10:25 PM

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alright thats fine

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so you have 180

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you can tell from intuition that it is divisible by 4

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which is a square number

glad egret Nov 23, 2025, 10:25 PM

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You can't use 18 or 10 cause they not perfect square. Like you only need to make perfect square to make your calculations easier.

fair fable Nov 23, 2025, 10:26 PM

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180 divided by 4 is 45

glad egret Nov 23, 2025, 10:26 PM

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You need to remember perfect square. That's what I have been taught.

fair fable Nov 23, 2025, 10:26 PM

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so its $\sqrt{(4)(45)}$ or $\sqrt{4}\sqrt{45}$

brittle shellBOT Nov 23, 2025, 10:26 PM

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ImOakley

barren dragon Nov 23, 2025, 10:26 PM

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ah

fair fable Nov 23, 2025, 10:26 PM

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which is $2\sqrt{45}$

brittle shellBOT Nov 23, 2025, 10:26 PM

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ImOakley

fair fable Nov 23, 2025, 10:27 PM

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then repeat the process for 45

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its divisible by 9

glad egret Nov 23, 2025, 10:27 PM

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Yes

barren dragon Nov 23, 2025, 10:27 PM

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okay i understood now the 4x45 but how did you moved the 2 there

fair fable Nov 23, 2025, 10:28 PM

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because of the law of surds $\sqrt{a}\sqrt{b}=\sqrt{ab}$

brittle shellBOT Nov 23, 2025, 10:28 PM

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ImOakley

glad egret Nov 23, 2025, 10:28 PM

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4 is perfect square

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Of 2

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You removed the underoot

barren dragon Nov 23, 2025, 10:29 PM

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hmmmmm

glad egret Nov 23, 2025, 10:30 PM

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??

barren dragon Nov 23, 2025, 10:30 PM

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So i should use this

fair fable Nov 23, 2025, 10:30 PM

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yeah

glad egret Nov 23, 2025, 10:30 PM

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Yes

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You need to use those laws here

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I did this way back in school so I don't remember the exact nomenclature. Now I just do it.

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hope it helped you

barren dragon Nov 23, 2025, 10:32 PM

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yeah thanks very much guys, imma do some tasks then i prob understand then

glad egret Nov 23, 2025, 10:33 PM

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sure

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Happy to help.

#i need help math 11th class im kinda slow at this