document.write( "Question 366606: I just solved a problem on my algebra test, and I am not sure how I did it... In regards to a rectangle with sides X and 2x+5, and area being 168\r
\n" ); document.write( "\n" ); document.write( "X(2x+5)=168\r
\n" ); document.write( "\n" ); document.write( "Solve for X\r
\n" ); document.write( "\n" ); document.write( "While trying to work on it, I was factoring 168, and realized the factors 8,21 fit for X and 2x+5... it was an intuitive leap. I would like to know how to actually solve this properly
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Algebra.Com's Answer #261272 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
\"x%282x%2B5%29=168+\"
\n" ); document.write( "\"2x%5E2%2B5x=168\"
\n" ); document.write( "\"2x%5E2%2B5x-168=0\"
\n" ); document.write( "\"%282x%2B21%29%28x-8%29=0\"
\n" ); document.write( "Two solutions but only 1 is positive.
\n" ); document.write( "\"x-8=0\"
\n" ); document.write( "\"highlight%28x=8%29\"
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