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 April 5th, 2014, 11:58 AM #1 Senior Member   Joined: Nov 2013 Posts: 434 Thanks: 8 factor factor (x+y)^4 + x^4 +y^4
 April 5th, 2014, 12:18 PM #2 Senior Member     Joined: Jul 2010 From: St. Augustine, FL., U.S.A.'s oldest city Posts: 12,209 Thanks: 517 Math Focus: Calculus/ODEs I would look for a factorization of the form: $\displaystyle (x+y)^4+x^4+y^4=2\left(x^2+axy+y^2 \right)\left(x^2+bxy+y^2 \right)$ Expand both sides, equate coefficients and solve the resulting system. Thanks from fahad nasir and mared

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