Question

Find the inverse of the function.
y = x2 + 4x + 4

Answer 1

y = -2+
`√(x)` and y = -2 -
`√(x)` combined, or
`x = y^2 + 4y + 4`

Explanation:

`y = x^2 + 4x + 4`

substitute y for x and x for y

`x = y^2 + 4y + 4`

this is technically the inverse but I will simplify further

x =
`(y+2)^2`

±
`√(x)` = y+2

y = -2±
`√(x)`

y = -2+
`√(x)` and y = -2 -
`√(x)` combined

Answer 2

The answer is C

Explanation: