因式分解.1.(x²-2x)²-2x²+4x-3 (x²-2x)²-2x²+4x-3 2. (m+2n)²-(m+2n)-12 3. 2(x-y)²z²-4(x-y)z²-48z²y²-xy-12x²
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![因式分解.1.(x²-2x)²-2x²+4x-3 (x²-2x)²-2x²+4x-3 2. (m+2n)²-(m+2n)-12 3. 2(x-y)²z²-4(x-y)z²-48z²y²-xy-12x²](/uploads/image/z/806613-69-3.jpg?t=%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3.1.%28x%26%23178%3B-2x%29%26%23178%3B-2x%26%23178%3B%2B4x-3+++++++%28x%26%23178%3B-2x%29%26%23178%3B-2x%26%23178%3B%2B4x-3+++2.++++++++%28m%2B2n%29%26%23178%3B-%28m%2B2n%29-12+++3.++++++++2%EF%BC%88x-y%EF%BC%89%26%23178%3Bz%26%23178%3B-4%EF%BC%88x-y%EF%BC%89z%26%23178%3B-48z%26%23178%3By%26%23178%3B-xy-12x%26%23178%3B)
因式分解.1.(x²-2x)²-2x²+4x-3 (x²-2x)²-2x²+4x-3 2. (m+2n)²-(m+2n)-12 3. 2(x-y)²z²-4(x-y)z²-48z²y²-xy-12x²
因式分解.1.(x²-2x)²-2x²+4x-3
(x²-2x)²-2x²+4x-3
2. (m+2n)²-(m+2n)-12
3. 2(x-y)²z²-4(x-y)z²-48z²
y²-xy-12x²
因式分解.1.(x²-2x)²-2x²+4x-3 (x²-2x)²-2x²+4x-3 2. (m+2n)²-(m+2n)-12 3. 2(x-y)²z²-4(x-y)z²-48z²y²-xy-12x²
(x²-2x)²-2x²+4x-3
= (x²-2x)²-2(x²-2x)-3
= (x²-2x-3)(x²-2x+1)
=(x+1)(x-3)(x-1)²
(m+2n)²-(m+2n)-12
=(m+2n-4)(m+2n+3)
2(x-y)²z²-4(x-y)z²-48z²
=2z²[(x-y)²-2(x-y)-24]
=2z²(x-y-6)(x-y+4)
y²-xy-12x²
=(y-4x)(y+3x)