Pre-Algebra Examples

$15 a^{2} b - 5 a^{2}$

Step 1

Factor $5 a^{2}$ out of $15 a^{2} b$ .

$5 a^{2} (3 b) - 5 a^{2}$

Step 2

Factor $5 a^{2}$ out of $- 5 a^{2}$ .

$5 a^{2} (3 b) + 5 a^{2} (- 1)$

Step 3

Factor $5 a^{2}$ out of $5 a^{2} (3 b) + 5 a^{2} (- 1)$ .

$5 a^{2} (3 b - 1)$