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Question		Answer
(a+b)³ start learning		a³+3a²b+3ab²+b³
(a-b)³ start learning		a³-3a²b+3ab²-b³
a³+b³ start learning		(a+b)(a²-ab+b²)
a³-b³ start learning		(a-b)(a²+ab+b²)
aⁿ-1 start learning		(a-1)(aⁿ-¹+aⁿ-²+...+a²+a+1)
aⁿ-bⁿ start learning		(a-b)(aⁿ-¹+aⁿ-²×b+aⁿ-³×b²+...+a²×bⁿ-²+bⁿ-¹)

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