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x2+3x-88 = 0
Since the sign of 88 is negative, think of two
integers that have product 88 and difference the
same as the coefficient of the x-term, which is 3.
Two such integers are +11 and -8. So we factor
(x+11)(x-8) = 0
Then we use the zero-factor property:
x+11 = 0 x-8 = 0
x = -11 x = 5
Edwin
