Answer:
Explanation:
(x + a) * (x + b) = 0?
The ONLY way that two things can multiply together to give zero is if ONE or BOTH of them IS ZERO.
so,
x+a=0 or x+b=0
(0 + a) * (a+ b) = 0 or (x + a) * (0+ b) = 0 or (0+ a) * (0+ b) = 0
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