練習題庫/huikao・難度 3下列何者為 (x−1)2+(x−1)(x+2)−6(x+2)2(x-1)^2+(x-1)(x+2)-6(x+2)^2(x−1)2+(x−1)(x+2)−6(x+2)2 的正確因式分解？(A)[(x−1)+2(x+2)][(x−1)−3(x+2)][(x-1)+2(x+2)][(x-1)-3(x+2)][(x−1)+2(x+2)][(x−1)−3(x+2)](B)[(x−1)+6(x+2)][(x−1)−(x+2)][(x-1)+6(x+2)][(x-1)-(x+2)][(x−1)+6(x+2)][(x−1)−(x+2)]登入後即可作答並查看完整詳解（每日免費 5 題）。