Pre-Algebra Examples

$(- 3 d^{2} - 8 + 2 d) + (4 d - 12 + d^{2})$

Step 1

Remove parentheses.

$- 3 d^{2} - 8 + 2 d + 4 d - 12 + d^{2}$

Step 2

Add $- 3 d^{2}$ and $d^{2}$ .

$- 2 d^{2} - 8 + 2 d + 4 d - 12$

Step 3

Subtract $12$ from $- 8$ .

$- 2 d^{2} + 2 d + 4 d - 20$

Step 4

Add $2 d$ and $4 d$ .

$- 2 d^{2} + 6 d - 20$

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