Finite Math Examples

$\sqrt{2 a^{2} + 4 a + 2}$

Step 1

Factor $2$ out of $2 a^{2} + 4 a + 2$ .

Tap for more steps...

Step 1.1

Factor $2$ out of $2 a^{2}$ .

$\sqrt{2 (a^{2}) + 4 a + 2}$

Step 1.2

Factor $2$ out of $4 a$ .

$\sqrt{2 (a^{2}) + 2 (2 a) + 2}$

Step 1.3

Factor $2$ out of $2$ .

$\sqrt{2 (a^{2}) + 2 (2 a) + 2 (1)}$

Step 1.4

Factor $2$ out of $2 (a^{2}) + 2 (2 a)$ .

$\sqrt{2 (a^{2} + 2 a) + 2 (1)}$

Step 1.5

Factor $2$ out of $2 (a^{2} + 2 a) + 2 (1)$ .

$\sqrt{2 (a^{2} + 2 a + 1)}$

Step 2

Factor using the perfect square rule.

Tap for more steps...

Step 2.1

Rewrite $1$ as $1^{2}$ .

$\sqrt{2 (a^{2} + 2 a + 1^{2})}$

Step 2.2

Check that the middle term is two times the product of the numbers being squared in the first term and third term.

$2 a = 2 \cdot a \cdot 1$

Step 2.3

Rewrite the polynomial.

$\sqrt{2 (a^{2} + 2 \cdot a \cdot 1 + 1^{2})}$

Step 2.4

Factor using the perfect square trinomial rule $a^{2} + 2 a b + b^{2} = {(a + b)}^{2}$ , where $a = a$ and $b = 1$ .

$\sqrt{2 {(a + 1)}^{2}}$

Step 3

Rewrite $2 {(a + 1)}^{2}$ as ${(a + 1^{2})}^{2} \cdot 2$ .

Tap for more steps...

Step 3.1

Reorder $2$ and ${(a + 1)}^{2}$ .

$\sqrt{{(a + 1)}^{2} \cdot 2}$

Step 3.2

Rewrite $1$ as $1^{2}$ .

$\sqrt{{(a + 1^{2})}^{2} \cdot 2}$

Step 4

Pull terms out from under the radical.

$(a + 1^{2}) \sqrt{2}$

Step 5

One to any power is one.

$(a + 1) \sqrt{2}$