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Dahlia Martin
Mathematics
15 June, 19:06
X^2 - 8x - 9 over x^2 - 1
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Austin Alexander
15 June, 19:17
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Factor both equations, you'll get (x-9) (x+1) for the first one and (x+1) (x-1) for the second one.
new equation: (x-9) (x+1) over (x+1) (x-1). You can cancel out both (x+1) s because when divided by each other you're left with the number one. The answer is (x-9) over (x-10
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