因式分解:(1)n²(m-2)-n(2-m) (2)x³-6x²+9x
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因式分解:(1)n²(m-2)-n(2-m) (2)x³-6x²+9x
![因式分解:(1)n²(m-2)-n(2-m) (2)x³-6x²+9x](/uploads/image/z/4679403-51-3.jpg?t=%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%3A%281%29n%26%23178%3B%28m%EF%BC%8D2%29%EF%BC%8Dn%282%EF%BC%8Dm%29+%282%29x%26%23179%3B%EF%BC%8D6x%26%23178%3B%2B9x)
(1)n²(m-2)-n(2-m)
=n²(m-2)+n(m-2)
=n(m-2)(n+1)
(2)x³-6x²+9x
=x(x²-6x+9)
=x(x-3)²
=n²(m-2)+n(m-2)
=n(m-2)(n+1)
(2)x³-6x²+9x
=x(x²-6x+9)
=x(x-3)²
因式分解:(1)n²(m-2)-n(2-m) (2)x³-6x²+9x
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