document.write( "Question 164344: Factor completely as possible.
\n" ); document.write( "9x^2-39x-30\r
\n" ); document.write( "\n" ); document.write( "Factor by grouping
\n" ); document.write( "10x^2-4xy-15xy+6y^2 \n" ); document.write( "

Algebra.Com's Answer #121063 by Earlsdon(6294) $\"\"$ $\"About$

You can put this solution on YOUR website!
Factor:
\n" ); document.write( " $\"9x%5E2-39x-30\"$ First, notice that 3 is a common factor of each of the three terms, so you can factor this.
\n" ); document.write( " $\"3%283x%5E2-13x-10%29\"$ Now factor the trinomial in parentheses.
\n" ); document.write( " $\"highlight%283%283x%2B2%29%28x-5%29%29\"$
\n" ); document.write( "Factor by grouping:
\n" ); document.write( " $\"10x%5E2-4xy-15xy%2B6y%5E2\"$ Group the terms as shown below:
\n" ); document.write( " $\"%2810x%5E2-4xy%29-%2815xy-6y%5E2%29\"$ Notice the change of sign on the last term! Now look for common factors in the terms of each group.
\n" ); document.write( " $\"2x%285x-2y%29-3y%285x-2y%29\"$ Now you can factor the common factors of (5x-2y)
\n" ); document.write( " $\"highlight%28%285x-2y%29%282x-3y%29%29\"$ \n" ); document.write( "

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