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Mathematics 17 Online
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

OpenStudy (anonymous):

c. do you need to know why?

OpenStudy (e.cociuba):

C.)

OpenStudy (anonymous):

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