SOLUTION: If m + n = 3 and m^2 + n^2 = 6, find the exact value of m^3 + n^3.

SOLUTION: If m + n = 3 and m^2 + n^2 = 6, find the exact value of m^3 + n^3.

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Question 427410: If m + n = 3 and m^2 + n^2 = 6, find the exact value of m^3 + n^3.
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
The expression is equal to .

Suppose we square both sides of to obtain . Replacing we get --> . Replace with in our first equation to get

--> .
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