Question

heeeellp if f(x)=x^2-1, what is the new equation for f^-1(x)?

Answer 1

That means the inverse of the function. To find the inverse:
Change 'f(x)' to y.
Swap x and y in the equation.
Solve for y.
Change y to f^(-1)(x)

Answer 2

ok would it be ....

Answer 3

when you get x = y^2 - 1
you would add both sides by 1 right?
so y^2 = x + 1 etc

Answer 4

so i