Factor 3x3 - x2y +6x2y - 2xy2 + 3xy2 - y3 = Options:
A) (3x - 2y)(x + y)  B) (3x - y)(x + y)(x - y)  C) (3x - y)(x + y)2  D) (3x - y)(x2 + y2)  E) none
Solution:   3x3 - x2y + 6x2y - 2xy2 + 3xy2 - y3=   x2(3x - y) + 2xy(3x - y) + y2(3x-y) =   (3x - y)(x2 + 2xy + y2)=   (3x - y)(x + y)2   Answer (3x - y)(x + y)2
<result>C</result>
Factor 3x3 - x2y +6x2y - 2xy2 + 3xy2 - y3 =