document.write( "Question 374981: I am having an issue solving an addition polynominial. Could you please help me!
\n" ); document.write( "The problem is as follows:
\n" ); document.write( "(9x^2-xy+y^2)+(-x^2-9xy+3y^2)
\n" ); document.write( "I appreciate the help!!! Algebra .com keep up the great work.
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Algebra.Com's Answer #266671 by christruck(1)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "first remove the parentheses that are not needed from the expression.
\n" ); document.write( "9x^2 - xy + y^2 - x^2 - 9xy + 3y^2\r
\n" ); document.write( "\n" ); document.write( "= 8x^2 - xy +y^2 - 9xy + 3y^2\r
\n" ); document.write( "\n" ); document.write( "Since -xy and -9xy are like terms, subtract 9xy from -xy to get -10xy. \r
\n" ); document.write( "\n" ); document.write( "= 8x^2 - 10xy + y^2 + 3y^2\r
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\n" ); document.write( "\n" ); document.write( "Since y^2 and 3y^2 are like terms, add 3y^2 to y^2 to get 4y^2\r
\n" ); document.write( "\n" ); document.write( "= answer: 8x^2 - 10xy + 4 y^2\r
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