(x+1)(y+3)(y-3),xy(x-3y)제곱,(x제곱+2)(x+1)(x-1)/(a+b)(x-1)제곱,y(x+5)(x-2)/-2,2x+3/(2x-2y+1)(x-y+6),(x+y-1)(x+y-3),(2x+y)(2x-y+2),(x+2y-1)(x-y+5)/
당신은 어느 그룹입니까?