T tk3078 New member Jul 5, 2010 #1 ( x^2( x + 3 )( x^2 - 9 ) + 2x( x - 3 )^2 ( x + 3) )/ x^2 + 2x - 3 The book says that it reduces to x( x - 3 )( x + 6 ) , but I don't know how.
( x^2( x + 3 )( x^2 - 9 ) + 2x( x - 3 )^2 ( x + 3) )/ x^2 + 2x - 3 The book says that it reduces to x( x - 3 )( x + 6 ) , but I don't know how.
