Algebra Examples

$\sqrt{- 9 - 6}$

Step 1

Subtract $6$ from $- 9$ .

$\sqrt{- 15}$

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 $i$ .

$i \sqrt{15}$