C-03-Q147mediumsingle_mcqFactorize x3−7xy2−6y3x^3 - 7xy^2 - 6y^3x3−7xy2−6y3:a(x+y)(x−3y)(x+2y)(x+y)(x-3y)(x+2y)(x+y)(x−3y)(x+2y)b