document.write( "Question 1126980: If x+y =3, then find xł+ył+10xy
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Algebra.Com's Answer #743345 by rothauserc(4718) $\"\"$ $\"About$

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Note that (a^3+b^3) = (a+b)(a^2−ab+b^2)
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\n" ); document.write( "(x^3+y^3)+10xy = (x+y)(x^2-xy+y^2) +10xy =
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\n" ); document.write( "3(x^2-xy+y^2) +10xy =
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\n" ); document.write( "3x^2 -3xy +3y^2 +10xy =
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\n" ); document.write( "3x^2 +7xy +3y^2
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