The expression a³ + b³ is equivalent to _____?
- (a + b) (a-b)(a-b)
- (a + b)³ - 3ab (a+b)
- (a + b)³ - ab(a+b)
- None of these
Explanation
a³ + b³ = (a + b)(a² - ab + b²) = (a + b)³ - 3ab(a + b)
Related MCQs
- 2x² + 4 = 9x
- 2x² + 9 = 4x
- 2x² + 9 = 4x
- x² + 4 = 9x
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