(x-y)²+5(x-y)+6 (x²-4x)²-3(x²-4x)-28 -2x²y+6xy+56y 因式分解(x-y)²+5(x-y)+6(x²-4x)²-3(x²-4x)-28-2x²y+6xy+56y 因式分解
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![(x-y)²+5(x-y)+6 (x²-4x)²-3(x²-4x)-28 -2x²y+6xy+56y 因式分解(x-y)²+5(x-y)+6(x²-4x)²-3(x²-4x)-28-2x²y+6xy+56y 因式分解](/uploads/image/z/2727481-49-1.jpg?t=%EF%BC%88x-y%EF%BC%89%26%23178%3B%2B5%EF%BC%88x-y%EF%BC%89%2B6+%EF%BC%88x%26%23178%3B-4x%EF%BC%89%26%23178%3B-3%28x%26%23178%3B-4x%29-28+-2x%26%23178%3By%2B6xy%2B56y+%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%EF%BC%88x-y%EF%BC%89%26%23178%3B%2B5%EF%BC%88x-y%EF%BC%89%2B6%EF%BC%88x%26%23178%3B-4x%EF%BC%89%26%23178%3B-3%28x%26%23178%3B-4x%29-28-2x%26%23178%3By%2B6xy%2B56y+%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3)
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(x-y)²+5(x-y)+6 (x²-4x)²-3(x²-4x)-28 -2x²y+6xy+56y 因式分解(x-y)²+5(x-y)+6(x²-4x)²-3(x²-4x)-28-2x²y+6xy+56y 因式分解
(x-y)²+5(x-y)+6 (x²-4x)²-3(x²-4x)-28 -2x²y+6xy+56y 因式分解
(x-y)²+5(x-y)+6
(x²-4x)²-3(x²-4x)-28
-2x²y+6xy+56y 因式分解
(x-y)²+5(x-y)+6 (x²-4x)²-3(x²-4x)-28 -2x²y+6xy+56y 因式分解(x-y)²+5(x-y)+6(x²-4x)²-3(x²-4x)-28-2x²y+6xy+56y 因式分解
(x-y)²+5(x-y)+6=(x-y+2)(x-y+3)
(x²-4x)²-3(x²-4x)-28=(x²-4x-7)(x²-4x+4)=(x²-4x-7)(x-2)(x-2)
-2x²y+6xy+56y =-2y(x²-3x-28) =2y(x+4)(7-x)