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OpenStudy (happyfeet8040):
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OpenStudy (happyfeet8040):
What are the factors of x2 - 81? (x + 9)(x - 9) (x - 9)(x - 9) (x + 3)(x - 27) Prime
OpenStudy (anonymous):
What times what equals -81 and added together equals 0?
OpenStudy (happyfeet8040):
-9 times -9?
OpenStudy (anonymous):
-9 times -9 would equal 81 and added up for -18, so no
OpenStudy (acxbox22):
no in this case we can factor using opposites
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OpenStudy (acxbox22):
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