CPM Homework Help : A2C Problem 7-57

Solve each equation below for y so that it could be entered in the graphing calculator.

$x^{2} = x\left(2x − 4\right) + y$
Hint (a):
First, distribute the x. Then set the equation equal to y and combine like terms.

$x = 3 + \left(y − 5\right)^{2}$
Hint (b):
First, subtract $3$ from both sides of the equation. Then take the square root of both sides and set the equation equal to $y$ .
Notice there are two results.