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OpenStudy (anonymous):
(x + 1)(x - 1) factoring trinomial
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OpenStudy (anonymous):
foil method!
OpenStudy (anonymous):
Use the Foil method F = Multiply First set of numbers O = Multiply Outer set of numbers I = Multiply Inner set of numbers L = Multiply Last set of numbers F = x * x =x^2 O = x * -1 = -1x I = x *1 = 1x L = 1 * -1 = -1 Put it together
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