Question

make 'a' the subject of c=(√a^2-b^2)

Answer 1

is that the square root of a^2 only or square root of a^2 + b^2

Answer 2

it's the square root of a^2 - b^2

Answer 3

you mean this \[\sqrt{a^2-b^2}\] ?

Answer 4

yes :)

Answer 5

then just use a^2-b^2= (a-b)(a+b)

Answer 6

but how do i use it in the sqrt?

Answer 7

so eliminate sqrt by squaring both sides...then use it....

Answer 8

square both the sides \[c={(a-b)(a+b)}\]

Answer 9

or \[c= a^2-b^2...a^2=c-b^2\]

Answer 10

now you can do it

Answer 11

or u can do this: