document.write( "Question 905070: can you help me answer this Factor using the ac-method.108x2 + 63xy + 9y2 \n" ); document.write( "
Algebra.Com's Answer #549011 by richwmiller(17219)\"\" \"About 
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108x^2 + 63xy + 9y^2
\n" ); document.write( "factor out 9
\n" ); document.write( "9(12x^2 + 7xy + 1y^2)
\n" ); document.write( "if the x and y intimidate you
\n" ); document.write( "leave out the y
\n" ); document.write( "12x^2 + 7x + 1)
\n" ); document.write( "factors of 12 which add up to 7
\n" ); document.write( "3 and 4
\n" ); document.write( "12x^2 + 3x +4x + 1)
\n" ); document.write( "3x*(4x+1)+1*(4x+1)
\n" ); document.write( "(3x+1) (4x+1)
\n" ); document.write( "Put the y's back in
\n" ); document.write( "(3x+y) (4x+y)
\n" ); document.write( "Don't forget the 9
\n" ); document.write( "9(3x+y) (4x+y)
\n" ); document.write( "check
\n" ); document.write( "12x^2+4xy+3xy+y^2
\n" ); document.write( "9*12x^2+7xy+y^2
\n" ); document.write( "108x^2+63xy+9y^2
\n" ); document.write( "ok\r
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