Pre-Algebra Examples

$7 x^{2} - 5 x - 6 + (x^{2} - 2 x + 3)$

Step 1

Remove parentheses.

$7 x^{2} - 5 x - 6 + x^{2} - 2 x + 3$

Step 2

Add $7 x^{2}$ and $x^{2}$ .

$8 x^{2} - 5 x - 6 - 2 x + 3$

Step 3

Subtract $2 x$ from $- 5 x$ .

$8 x^{2} - 7 x - 6 + 3$

Step 4

Add $- 6$ and $3$ .

$8 x^{2} - 7 x - 3$

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