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[frosty slate]

if x + y = 14 and xy = 47 whats x and y

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[frosty slate]

buti feel like its wrong

and i also got this formula from cha t gpt

but

🤷‍♀️

[cursive hare]

You can use substitution to solve it

[frosty slate]

wym

[cursive hare]

Wait lemme write it on paper

[frosty slate]

ook

[cursive hare]

So we have those two equations, we will use one of them to find x or y then substitute it in the other one to find one of them then substitue the one you found in on of the equations, this sounds complicated but lemme explain it on paper it will be easier

[frosty slate]

yes plz explain on paper

[cursive hare]

We will use the second one to find x with y in it, we divide both sides by y the ones on the left will cancel each other and we will be left with x = 47/y

Sorry it got tilted

[frosty slate]

why divide both sides by y

[cursive hare]

To get rid of the y thats next to the x, we only want the x for now, or you can divide both sides by x to only have y, like this

Either one of them is correct

Is everything clear so far ?

At this point You are just trying to get either x or y alone

[frosty slate]

confused

we can just randomly divide y?

den why not remove the y here too

[cursive hare]

You cant remove it because there is nothing to divide it with so it is kept there

[cursive hare]

In maths the two sides of the = are always equal to each other so if you wanna add something you add it to both sides and they will still be equal

[frosty slate]

ph

oh

[cursive hare]

Wanna vc so i can explain it while talking ?

[frosty slate]

im in class lmao

[cursive hare]

Oh

[frosty slate]

in maths class

[:

[cursive hare]

Wait is this an exam ?

[frosty slate]

nop

thats not the question

[cursive hare]

Alright

[frosty slate]

that we're doing

the qu estion is behind

im asking here cz teachers speaking english

n i cant und erstand

[stiff juniper]

x+y = 14
xy = 47 right

[frosty slate]

so im not gon ask my teacher

[stiff juniper]

you want to make x the subject or y the subject in the second one? @frosty slate

[frosty slate]

wym by subject

and second one?

huhu

[stiff juniper]

make it x = or y =

[frosty slate]

both

find x n y

[stiff juniper]

you know simultaneous equation

[frosty slate]

whats th at

[stiff juniper]

Because you said and

it means they are both true

[frosty slate]

oh find x = what
y = what

[stiff juniper]

Yes

so the way you do that

can you make x the subject?

in the equation xy= 47

[frosty slate]

wait u r refering the picture?

[stiff juniper]

rearrange it to make it x =

no

[frosty slate]

im lost

[stiff juniper]

xy = 47

[frosty slate]

yeah

[stiff juniper]

ok

Do you know how rearrange

to make it to be x =

[frosty slate]

na uh

havent learn those

[stiff juniper]

xy = 47

means x times by y is 47

[frosty slate]

yez

[stiff juniper]

that make sense so far?

ok

[frosty slate]

makes sese

[stiff juniper]

So if you want it to be x =

divide both sides by y

To get x = 47/y

[frosty slate]

[stiff juniper]

you get that?

[frosty slate]

both sides = ?

[stiff juniper]

wdym

let me get a paper

[cursive hare]

.

[frosty slate]

what grade will i learn these

yeah thats the part im stuck in

[cursive hare]

,tex [x = \frac{47}{y} ]

[atomic swan]

!Ego

[frosty slate]

huh

isnt it

xy=47

[cursive hare]

When you divide both sides by Y the x will be alone, which will make you closer to solving it, you take the x and substitute it in the other equation which will make it only have y

[stiff juniper]

yes

[cursive hare]

Yeah but we divided both sides by y

After you have the x = 47/y you will take it into the first equation which eill become 47/y + y = 14

[stiff juniper]

then multiply all by y

to get 47 + y^2 = 14

$47 + y^2 = 14$

[atomic swan]

᲼

[frosty slate]

uhhhhhhhhh yk what ill wait till the times comes then only i attempt these questions again 🥹

si hard

[stiff juniper]

now move 14 back, $33+y^2=0$

[atomic swan]

᲼

[cursive hare]

Wait, are you sure the question is right ?

[stiff juniper]

wait im tripping

yeah

becuase b will be 0

[cursive hare]

y is an imaginary number

[stiff juniper]

now b^2 -4ac < 0

[frosty slate]

wat

[stiff juniper]

your question isn't valid

[frosty slate]

huh

fr

[stiff juniper]

it wont give you a solution

[cursive hare]

The question is not your grade because y will be an imaginary number

[frosty slate]

what gra de is that

when will we learn imaginary number

[cursive hare]

Last high school year

$y = \sqrt{33} i$

[atomic swan]

!Ego

[cursive hare]

The age of 17/18 i think

[frosty slate]

ayo wha t

i quit

[stiff juniper]

you sure you didn't send us the wrong number or something

because thats easily done

if x +2y = 14 and xy = 47 whats x and y

thats now valid innit

because now you have 33 +2y+ y^2 = 0

[frosty slate]

im sure

a thousand million pe rrcent srue

[cursive hare]

Was it given by the teacher ?

[frosty slate]

its in the paper

[cursive hare]

Its invalid according to your grade

[stiff juniper]

typo by teacher?

[frosty slate]

i learn a lot invalid stufs

[stiff juniper]

plus minus innit

[cursive hare]

I hate that sh*

[stiff juniper]

$y = +\sqrt{33} i or -\sqrt{33} i$

[atomic swan]

᲼

[stiff juniper]

lmao trust me

[cursive hare]

I have been working with shapes for a while i forgot the - part

[stiff juniper]

i dont even know what complex number system is bro

i just know if b^2 -4ac < 0 not valid

cus you can't root a negative in the normal number system

[frosty slate]

more invalid stuffs for my grade
x-y=3, find the value of x^3-2x^2y+xy^2-3xy+3y^2
a=b=4 find the value of a^3-b^3-12ab

i learne complex stuffs

🤷‍♀️

[cursive hare]

Pretty simple just $\sqrt{-1} = i$

[frosty slate]

whys there suddenly i

i lsot track

[stiff juniper]

do you write the i on the outside

of the root

or outside

[cursive hare]

Just ugnore it

[cursive hare]

Outside

[frosty slate]

okayigs

[stiff juniper]

what grade you in @cursive hare

[cursive hare]

Last one before college

[stiff juniper]

age?

[cursive hare]

19

[stiff juniper]

ok im 16

[frosty slate]

wow

[cursive hare]

,tex [ \sqrt{-15} = \sqrt{15} i ]

[atomic swan]

!Ego

[cursive hare]

Also you can close this post by typing +close when you are done

[frosty slate]

im totally done

aint doing grade 10 stuffs

sayounara

[cursive hare]

Alright have a nice day

[frosty slate]

+close