Precalculus Examples

$| x^{2} + x - 1 | = 1$

Step 1

Graph each side of the equation. The solution is the x-value of the point of intersection.

$x = - 2, - 1, 0, 1$

Step 2

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$