# Algebra

Simplify the rational expression. State any restrictions on the variable.

t^2+4t-12/t^2-4

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asked by Emma
1. assuming the usual sloppiness with parentheses,
(t^2+4t-12)/(t^2-4) = (t+6)(t-2) / (t+2)(t-2)

Now it's easy. Exclude any values for t where the denominator is zero, then cancel the (t-2) factor.

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posted by oobleck

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