document.write( "Question 38200: 5x^2-20y^2 \n" ); document.write( "
Algebra.Com's Answer #23668 by fractalier(6550)![]() ![]() You can put this solution on YOUR website! From 5x^2 - 20y^2, we first factor out the 5 and get \n" ); document.write( "5(x^2 - 4y^2) \n" ); document.write( "But x^2 - 4y^2 is the difference of squares, and can be factored again... \n" ); document.write( "5(x^2 - 4y^2) = \n" ); document.write( "5(x + 2y)(x - 2y) \n" ); document.write( " |