### Home > CCA2 > Chapter C > Lesson C.1.2 > ProblemC-39

C-39.

Solve each of the following equations or systems.

1. $x^2-1=15$

How many solutions should you be looking for?

$x=\pm4$

1. \begin{aligned}[t] y = 3x - 2 \\ y = 4x + 3 \end{aligned}

Use the Equal Values method.
Make sure to solve for both $x$ and $y$.

1. $x^2-2x-8=0$

Factor and use the Zero Product Property.

1.  $2x^2=-x+7$

Start by setting the equation equal to $0$.