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Match each cubic identity with its algebraic expansion:

A1-A, 2-B, 3-C
B1-B, 2-A, 3-C
C1-C, 2-B, 3-A
D1-A, 2-C, 3-B
Answer & Solution
Correct answer: A. 1-A, 2-B, 3-C
(a+b)³ = a³+b³+3ab(a+b). (a-b)³ = a³-b³-3ab(a-b). a³+b³+c³-3abc factors with (a+b+c).
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