Question

solve $(2a - 6)(3a + 15) = 0$.
$a = \square, a = \square$

Explanation:

Step1: Apply zero product property

Set each factor equal to 0:
$2a - 6 = 0$ and $3a + 15 = 0$

Step2: Solve first equation for $a$

Isolate $a$:
$2a = 6$
$a = \frac{6}{2} = 3$

Step3: Solve second equation for $a$

Isolate $a$:
$3a = -15$
$a = \frac{-15}{3} = -5$

Answer:

$a = 3$, $a = -5$