Answers

2015-02-21T05:29:07+05:30
X3-y3 =  (x-y)3 + 3 x y (x-y)

==  (2)3+3 x y (2)

=  8+6 x y 
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2015-02-21T15:08:18+05:30
Given, x-y = 2
x^3 - y^3 =  (x-y)^3 + 3*x*y(x-y) = 2^3 + 3*x*y*2 = 8 + 6*x*y

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