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OpenStudy (anonymous):
Factor a^2 - 2a - 15 someone please help!
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OpenStudy (aum):
-15 = -5 * +3 and -5 + 3 = -2 which is the middle coefficient. So (a-5)(a+3)
OpenStudy (anonymous):
can you help me with this one y^2 + 4y +4
OpenStudy (anonymous):
and also this one y^2 - 2y -8
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