因式分解的几道题 -3x³+12x²-12xm²(a-2)+(2-a)
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因式分解的几道题 -3x³+12x²-12xm²(a-2)+(2-a)
因式分解的几道题
-3x³+12x²-12x
m²(a-2)+(2-a)
因式分解的几道题 -3x³+12x²-12xm²(a-2)+(2-a)
-3x³+12x²-12x
=-3x(x²-4x+4)
=-3x(x-2)²
m²(a-2)+(2-a)
=m²(a-2)-(a-2)
=(a-2)(m²-1)
=(a-2)(m+1)(m-1)