Trigonometry Examples

$f (x) = 2 x - 4$

Step 1

Factor $2$ out of $2 x$ .

$f (x) = 2 (x) - 4$

Step 2

Factor $2$ out of $- 4$ .

$f (x) = 2 x + 2 \cdot - 2$

Step 3

Factor $2$ out of $2 x + 2 \cdot - 2$ .

$f (x) = 2 (x - 2)$