Question 391772
for example,
(x + 1)*(x + 2) = 0
For for product to be zero, either x + 1 = 0, or x + 2 = 0.
If both terms are not zero, then the product would not be zero.
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This does not apply to other numbers.
(x+1)*(x+2) = 4 does NOT mean than one of the terms = 4, or that they both equal 2, or any other limitation.
It's the "zero product", the product must equal zero.