document.write( "Question 571319: x^2-2x+5x-(-x^2+7x) \n" ); document.write( "
Algebra.Com's Answer #368316 by jim_thompson5910(35256)\"\" \"About 
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x^2-2x+5x-(-x^2+7x)\r
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\n" ); document.write( "\n" ); document.write( "x^2-2x+5x+x^2-7x\r
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\n" ); document.write( "\n" ); document.write( "(x^2+x^2)+(-2x+5x-7x)\r
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\n" ); document.write( "\n" ); document.write( "2x^2-4x\r
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\n" ); document.write( "\n" ); document.write( "So x^2-2x+5x-(-x^2+7x) = 2x^2-4x for all values of x
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