Question

Solve x = r2 - y2 for r

Answer 1

solve for r2?

Answer 2

solve for r

Answer 3

is it \[\large r^2?\]

Answer 4

did you mean

\[x=r^2-y^2\]

Answer 5

I'm sorry. Yes, x=sqrt of r squared minus sqrt of y squared, solve for r

Answer 6

ok then add \(y^2\) on both sides what do you get ?

Answer 7

first, how do you get the square beside the variable

Answer 8

use equation button below

Answer 9

uhhh nope...where

Answer 10

ohhh, i see it now

Answer 11

:)

Answer 12

x\[x ^{2}+y ^{2}=r ^{2}\]

Answer 13

is it \[x^2?\]

Answer 14

yes

Answer 15

ok now you got equation for \(r^2\) .Now take square root on both sides to get r

Answer 16

what will that be?

Answer 17

Okay...I'm new to this site and I'm having a hard time with the "equation" button. I know the answer will be r = sqrt of x sqrd + y sqrd. My question...why does the square remove from the r and not the x and y?

Answer 18

simply because square root does not distribute to each term

Answer 19

\[\large \sqrt{a+b} \neq \sqrt{a} +\sqrt{b}\]

Answer 20

i think that clears ur doubt

Answer 21

Yes, it does. Thank you for ur patience. I'm going to play around with the equation buton. :-)

Answer 22

lols all the best !! if you hav any problem about using the site ,fell free to ask me :)

Answer 23

and @ericalashawn

\[\huge \color{green}{\text{WELCOME TO OPENSTUDY!}}\]

Answer 24

u are meant to say "GOTTA CATCH EM ALL!"

Answer 25

lols @JayDS