Pre-Algebra Examples

$(3 x^{2} - 5 x + 6) + (9 - 8 x - 4 x^{2})$

Step 1

Remove parentheses.

$3 x^{2} - 5 x + 6 + 9 - 8 x - 4 x^{2}$

Step 2

Subtract $4 x^{2}$ from $3 x^{2}$ .

$- x^{2} - 5 x + 6 + 9 - 8 x$

Step 3

Subtract $8 x$ from $- 5 x$ .

$- x^{2} - 13 x + 6 + 9$

Step 4

Add $6$ and $9$ .

$- x^{2} - 13 x + 15$

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