X+Y=12 and XY=27,find the value of X³+Y³
Anonymous:
I think Second answer is better than my answer.So you should choose that.
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Answered by
28
I hope you'll satisfy.
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Answered by
33
= x^3 + y^3 + 3xy(x+y)
x^3 + y^3 = (x+y)^3 - 3xy(x+y)
=(12)^3 - 3(27)(12)
= 1728 - 972
= 756
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