Algebra Examples

$f (20) = \sqrt{5 (20) - 4}$

Step 1

Multiply $5$ by $20$ .

$f (20) = \sqrt{100 - 4}$

Step 2

Subtract $4$ from $100$ .

$f (20) = \sqrt{96}$

Step 3

Rewrite $96$ as $4^{2} \cdot 6$ .

Tap for more steps...

Step 3.1

Factor $16$ out of $96$ .

$f (20) = \sqrt{16 (6)}$

Step 3.2

Rewrite $16$ as $4^{2}$ .

$f (20) = \sqrt{4^{2} \cdot 6}$

$f (20) = \sqrt{4^{2} \cdot 6}$

Step 4

Pull terms out from under the radical.

$f (20) = 4 \sqrt{6}$

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