因式分解.1.(x²-2x)²-2x²+4x-3
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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)z²-48z²
y²-xy-12x²
(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
(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)
= (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)