Precalculus Examples

$\sqrt{2 \sec^{2} (x) - 4}$

Step 1

Factor $2$ out of $2 \sec^{2} (x)$ .

$\sqrt{2 (\sec^{2} (x)) - 4}$

Step 2

Factor $2$ out of $- 4$ .

$\sqrt{2 \sec^{2} (x) + 2 \cdot - 2}$

Step 3

Factor $2$ out of $2 \sec^{2} (x) + 2 \cdot - 2$ .

$\sqrt{2 (\sec^{2} (x) - 2)}$