Answer:
a = 7 or a = -2
Step-by-step explanation:
Zero factor principle states that:
If ab = 0, then a = 0 or(or and) b = 0
a - 7 = 0
a = 0 + 7
a = 7
OR
a + 2 = 0
a = 0 - 2
a = -2
Answer:
The solution set is {-2, 7}.
Step-by-step explanation:
(a-7)(a+2)=0
a - 7 = 0 or a + 2 = 0
so a is 7, -2.
