Pre-Algebra Examples

$- 8 x^{2} - 4 + 5 x + 12 x^{2} - 7 x$

Step 1

Add $- 8 x^{2}$ and $12 x^{2}$ .

$4 x^{2} - 4 + 5 x - 7 x$

Step 2

Subtract $7 x$ from $5 x$ .

$4 x^{2} - 4 - 2 x$

Step 3

Move $- 4$ .

$4 x^{2} - 2 x - 4$

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