Question

Find the inverse:
y=x^2+2x+1

please :)

Answer 1

replace x by y and y by x
x = y^2 + 2y + 1
x = (y+1)^2
y+1 = +/- sqrt(x)

\[y=-1\pm \sqrt{x}\]

replace y by \[y ^{-1} = -1\pm \sqrt{x}\]

Answer 2

read it as y inverse

Answer 3

ah beautiful! thank you.