Algebrahard · Past Paper
Factorize x^2 - 1/x^2 - 4(x - 1/x).
A(x-1/x)(x+1/x-4)
B(x-1/x)(x-1/x-4)
C(x+1/x)(x-1/x-4)
D(x-1/x)^2-4
✓ Correct Answer: A — (x-1/x)(x+1/x-4)
(x-1/x)(x+1/x) - 4(x-1/x) = (x-1/x)(x+1/x-4).
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✓ Correct Answer: A — (x-1/x)(x+1/x-4)
(x-1/x)(x+1/x) - 4(x-1/x) = (x-1/x)(x+1/x-4).
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