(x2 - 1)(x + 2)
x2(x + 2)
2 + 34
3x2−1(x−1)
Correct answer is B
(1+x−11x+1)(x+2)
(x−1)÷1x+1=(x−1)(x+1)=x2−1
(1+x2−1)(x+2)=x2(x+2)
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