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OpenStudy (anonymous):
Use the fact that a/b over c/d = a/b ÷ c/d to simplify the rational expression, stating any restrictions on variable. x^2 – 1 over x^2 – 9 ____________________ x^2 + 3x – 4 over x^2 + 8x + 15
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OpenStudy (anonymous):
@jim_thompson5910 I am totally lost on this. Can you explain?
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