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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
人气:328 ℃ 时间:2019-09-06 01:11:10
解答
(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)z²-48z...
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