document.write( "Question 189314: the square of the sum of two numbers equals the sum of their squares plus twice their product \n" ); document.write( "
Algebra.Com's Answer #142025 by checkley75(3666)\"\" \"About 
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(x+y)^2=x^2+y^2+2xy
\n" ); document.write( "x^2+2xy+y^2=x^2+2xy+y^2 proof.
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