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After factorising, (x^2 - 1)/(x^2 + 3x - 4) tends to what as x goes to 1?
AEqual to 1/2
BEqual to 2
CEqual to 2/5
DEqual to 0
Answer & Solution
Correct answer: C. Equal to 2/5
Factorising gives (x-1)(x+1)/((x-1)(x+4)) = (x+1)/(x+4), which equals 2/5.
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