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OpenStudy (anonymous):
How would you factor/simplify this? x^2 - 1/ x^2 + 2x +1
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OpenStudy (anonymous):
x^2 - 1 = (x+1)(x-1) x^2 + 2x + 1 = (x+1)^2
OpenStudy (anonymous):
you get (x-1)/(x+1)
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