document.write( "Question 153544: Please help me solve the following problem:
\n" ); document.write( " Simplify the expression (x^2 - 9)/(x^2 + 3x)\r
\n" ); document.write( "\n" ); document.write( "My attempt to this problem was to cancel out the x^2 because they divided each other, and then i simplified -9/3x to -3x. But when i check to see if my work is correct by substituting x for 2, the answers did not match.
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Algebra.Com's Answer #113024 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
Remember the expression in the parentheses is a unique expression.
\n" ); document.write( "You can only divide or cancel out terms, inside parentheses, if they match exactly.
\n" ); document.write( "\"%28x%5E2+-+9%29%2F%28x%5E2+%2B+3x%29\"
\n" ); document.write( "You can factor the top term,
\n" ); document.write( "\"x%5E2-9=%28x%2B3%29%28x-3%29\"
\n" ); document.write( "and also the bottom one,
\n" ); document.write( "\"x%5E2%2B3x=x%28x%2B3%29\"
\n" ); document.write( "\"%28x%5E2+-+9%29%2F%28x%5E2+%2B+3x%29=%28%28x%2B3%29%28x-3%29%29%2F%28x%28x%2B3%29%29\"
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\n" ); document.write( "\"%28x%5E2+-+9%29%2F%28x%5E2+%2B+3x%29=%28x-3%29%2Fx\"
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