Question

If f(g(x))=4x^2-8x and f(x)=x^2-4 then g(x)= ?

Answer 1

@jiteshmeghwal9

Answer 2

wait..... sorry i did a mistake

Answer 3

I know.

Answer 4

A convenient solution is to let y=g(x)
and f(y)=f(g(x))
\[y^2 - 4 =4x^2 - 8x\]
rearrange for y and voila! you get g(x)

Answer 5

ya @Shadowys is right :)