Pre-Algebra Examples

Find the sum of

2 x^{2} - 8 x - 6

$2 x^{2} - 8 x - 6$ and

9 x^{2} - 8

$9 x^{2} - 8$

Step 1

Write the problem as a mathematical expression.

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

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

Step 2

Add

2 x^{2}

$2 x^{2}$ and

9 x^{2}

$9 x^{2}$ .

11 x^{2} - 8 x - 6 - 8

$11 x^{2} - 8 x - 6 - 8$

Step 3

Subtract

8

$8$ from

- 6

$- 6$ .

11 x^{2} - 8 x - 14

$11 x^{2} - 8 x - 14$

⎡ ⎢ ⎣ \begin{matrix} x^{2} & \frac{1}{2} \sqrt{π} & \int x d x \end{matrix} ⎤ ⎥ ⎦

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