Basic Math Examples

$\sqrt{5 - 20}$

Step 1

Subtract $20$ from $5$ .

$\sqrt{- 15}$

Step 2

Rewrite $- 15$ as $- 1 (15)$ .

$\sqrt{- 1 (15)}$

Step 3

Rewrite $\sqrt{- 1 (15)}$ as $\sqrt{- 1} \cdot \sqrt{15}$ .

$\sqrt{- 1} \cdot \sqrt{15}$

Step 4

Rewrite $\sqrt{- 1}$ as $i$ .

$i \sqrt{15}$