SOLUTION: if x-y=5,xy=84 find value of x cube - y cube

SOLUTION: if x-y=5,xy=84 find value of x cube - y cube

Algebra.Com

Question 977239: if x-y=5,xy=84 find value of x cube - y cube

Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

Solve

for

. Substitute into

. Solve the resulting quadratic for both possible values for

. Solve

for both possible values for

. Substitute each of your value pairs into

and do your arithmetic.

John

My calculator said it, I believe it, that settles it

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