Question

What is the inverse of f(x)=x^2+5

Answer 1

`√(X-5)`,
`-√(X-5)`

Explanation:

Replace X with Y

solve for Y; X = Y^2 + 5

subtract 5 from both sides

X - 5 = Y^2

take the square root

Y = plus or minus sqrt(X-5)

sqrt(X-5); -sqrt(X-5)