if a b=10,ab=21.then a cube b cube=
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(a+b)cube=(10)cube
a3+b3+3ab(a+b)=1000
a3+b3+3*21(10)=1000
a3+b3+630=1000
a3+b3=1000-630
a3+b3=370.ans
a3+b3+3ab(a+b)=1000
a3+b3+3*21(10)=1000
a3+b3+630=1000
a3+b3=1000-630
a3+b3=370.ans
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