CAPE Pure Mathematics Unit 1 · May/June 2012 · Paper 1 · Question Q7
a^5 - b^5 =
- (A)
(a - b)(a^4 - a^3b + a^2b^2 - ab^3 + b^4) - (B)
(a - b)(a^4 + a^3b + a^2b^2 + ab^3 + b^4) - (C)
(a + b)(a^4 - a^3b + a^2b^2 - ab^3 + b^4) - (D)
(a + b)(a^4 + a^3b + a^2b^2 + ab^3 + b^4)
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