Question

Please help urgent!!!!

Answer 1

B

Explanation:

let y = f(x) and rearrange making x the subject

y = (2x - 4)² ( take the square root of both sides )

`√(y)` = 2x - 4 ( add 4 to both sides )

`√(y)` + 4 = 2x ( divide terms on both sides by 2 )

`(1)/(2)`
`√(y)` + 2 = x

x =
`(1)/(2)`
`√(y)` + 2

Change y back into terms of x

`f^(-1)`(x) =
`(1)/(2)`
`√(x)` + 2, x ≥ 0