If a+b=11,ab=28,find value of a 3 +b 3 .
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a+b=11
(a+b)^3=11^3
a^3+b^3+3ab (a+b)=1331
a^3+b^3+3.28.11=1331
a^3+b^3=1331-924=407
(a+b)^3=11^3
a^3+b^3+3ab (a+b)=1331
a^3+b^3+3.28.11=1331
a^3+b^3=1331-924=407
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