Algebrahard · Past Paper
Factorize a^6 - 1.
A(a-1)(a+1)(a^2+a+1)(a^2-a+1)
B(a^3-1)^2
C(a^2-1)^3
D(a-1)^6
✓ Correct Answer: A — (a-1)(a+1)(a^2+a+1)(a^2-a+1)
(a^3-1)(a^3+1) = (a-1)(a^2+a+1)(a+1)(a^2-a+1).
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✓ Correct Answer: A — (a-1)(a+1)(a^2+a+1)(a^2-a+1)
(a^3-1)(a^3+1) = (a-1)(a^2+a+1)(a+1)(a^2-a+1).
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