SOLUTION: how to solve x+y= 3 and xy= 1, then x²+y²= (?) and x^5 + y^5 = (?)
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Question 978041: how to solve x+y= 3 and xy= 1, then x²+y²= (?) and x^5 + y^5 = (?)
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
Most important goal is solve for x and y.
and then
which is only one of the two x y pairs.
Evaluating the two requested expressions is a bunch of arithmetic.
(You might want to use Binomial Theorem.)
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