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How do you factor x^2+8b-9?
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you gotta understand how the terms are put together; the last term is mutiplied by 2 numbers; lets call them bob and sally the middle term is the addition of bob and sally......
the factors of 9 are; 1,3,9 bob can be 9 and sally can be -1 when bob and sally add together; 9-1 = 8 we are good
oh yes now i remember thanks
(x+bob) (x+sally) (x+9)(x-1)
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