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OpenStudy (anonymous):
Factor x2 - x - 90 = 0. A. (x + 10)(x + 9) = 0 B. (x - 10)(x - 9) = 0 C. (x - 10)(x + 9) = 0 D. (x + 10)(x - 9) = 0
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OpenStudy (anonymous):
c. do you need to know why?
OpenStudy (e.cociuba):
C.)
OpenStudy (anonymous):
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