document.write( "Question 390215: factor:2x^2-5xy-12y^2 \n" ); document.write( "
\n" ); document.write( "Hi, \n" ); document.write( " factoring\n" ); document.write( " 2x^2-5xy-12y^2\n" ); document.write( "(2x + 3y)(x -4y) \n" ); document.write( "Note:SUM of the inner product(3xy) and the outer product(-8xy) = -5xy