SOLUTION: if {{{x^2+2xy+y^2=8}}}, find {{{3(x+y)^2}}}

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: if {{{x^2+2xy+y^2=8}}}, find {{{3(x+y)^2}}}      Log On


   

Question 439127: if x%5E2%2B2xy%2By%5E2=8, find 3%28x%2By%29%5E2
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
if x%5E2%2B2xy%2By%5E2=8, find 3%28x%2By%29%5E2
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if x^2+2xy+y^2=8
then (x+y)^2 = 8
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So, 3*(x+y)^2 = 3*8 = 24
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Cheers,
Stan H.
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