(5a-b)3( 2b-a)3
(b-a+2)3
(3b+2a+c)3
(6+-y)3
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(5a-b)3 = (5a)³ +3,(5a)².(-b) + 3.5a.(-b)² + (-b)³=>125a³ - 75a²b + 35ab² - b³
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( 2b-a)3 = (2b)³ +3(2b)².(-a) + 3.2b.(-a)² + (-a)³=> 8b³ - 12ab² + 6a²a - a³ =========================================================
(b-a+2)3 = (b-a+2)².(b-a+2)
b³ -3ab²+3a²b-12ab+6b²+12b -12a+6a²-a²+8
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(3b+2a+c)³ = (3b+2a+c)².(3b+2a+c)
27b³ +54ab²+27b²c+36abc+36a²b+9bc²+12a²c+6ac²+8a³+c³
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(6-y)³ = 6³+3.6²(-y) + 3.6(-y)²+(-y)³ ==> 216 - 108y + 18y² - y³
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