Pre-Algebra Examples

$2 a (a - 5) + 4 (a - 5)$

Step 1

Simplify each term.

Tap for more steps...

Step 1.1

Apply the distributive property.

$2 a \cdot a + 2 a \cdot - 5 + 4 (a - 5)$

Step 1.2

Multiply $a$ by $a$ by adding the exponents.

Tap for more steps...

Step 1.2.1

Move $a$ .

$2 (a \cdot a) + 2 a \cdot - 5 + 4 (a - 5)$

Step 1.2.2

Multiply $a$ by $a$ .

$2 a^{2} + 2 a \cdot - 5 + 4 (a - 5)$

$2 a^{2} + 2 a \cdot - 5 + 4 (a - 5)$

Step 1.3

Multiply $- 5$ by $2$ .

$2 a^{2} - 10 a + 4 (a - 5)$

Step 1.4

Apply the distributive property.

$2 a^{2} - 10 a + 4 a + 4 \cdot - 5$

Step 1.5

Multiply $4$ by $- 5$ .

$2 a^{2} - 10 a + 4 a - 20$

$2 a^{2} - 10 a + 4 a - 20$

Step 2

Add $- 10 a$ and $4 a$ .

$2 a^{2} - 6 a - 20$

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