Pre-Algebra Examples

(2 x^{2} - 6 x - 2)

$(2 x^{2} - 6 x - 2)$ and

(x^{2} + 4 x)

$(x^{2} + 4 x)$

Step 1

Add the expressions.

2 x^{2} - 6 x - 2 + x^{2} + 4 x

$2 x^{2} - 6 x - 2 + x^{2} + 4 x$

Step 2

Remove parentheses.

2 x^{2} - 6 x - 2 + x^{2} + 4 x

$2 x^{2} - 6 x - 2 + x^{2} + 4 x$

Step 3

Add

2 x^{2}

$2 x^{2}$ and

x^{2}

$x^{2}$ .

3 x^{2} - 6 x - 2 + 4 x

$3 x^{2} - 6 x - 2 + 4 x$

Step 4

Add

- 6 x

$- 6 x$ and

4 x

$4 x$ .

3 x^{2} - 2 x - 2

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

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

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