if a-b=2 and ab=3 , then a3-b3=? – InterviewSolution

1.	if a-b=2 and ab=3 , then a3-b3=?
Answer» a-b=2a^2-2ab+b^2=4so a^2+b^2=4+6=10a^3-b^3=(a-b)(a^2+ab+b^2)=2(10+3)=26

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