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## Homework Statement

y^2 - 2y = x^3 + 2x^2 + 2x + 3

## Homework Equations

## The Attempt at a Solution

Solve for y

How do you solve for y? my book says since that equation is quadratic in y, it can be solved as y = 1 +- sqrt(x^3 + 2x^2 + 2x + 4) but I have no idea how to do that...

all I can do is y(y-2) ...