把下列各式分解因式:(1)-8a的3次方b²+12ab的3次方c(2)3a(x-y)+9(y-x)(3)(2m-3n)²-2m+3n(4)16mn的4次方-m
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![把下列各式分解因式:(1)-8a的3次方b²+12ab的3次方c(2)3a(x-y)+9(y-x)(3)(2m-3n)²-2m+3n(4)16mn的4次方-m](/uploads/image/z/646557-69-7.jpg?t=%E6%8A%8A%E4%B8%8B%E5%88%97%E5%90%84%E5%BC%8F%E5%88%86%E8%A7%A3%E5%9B%A0%E5%BC%8F%EF%BC%9A%EF%BC%881%EF%BC%89-8a%E7%9A%843%E6%AC%A1%E6%96%B9b%26%23178%3B%2B12ab%E7%9A%843%E6%AC%A1%E6%96%B9c%EF%BC%882%EF%BC%893a%EF%BC%88x-y%EF%BC%89%2B9%EF%BC%88y-x%29%EF%BC%883%EF%BC%89%EF%BC%882m-3n%29%26%23178%3B-2m%2B3n%EF%BC%884%EF%BC%8916mn%E7%9A%844%E6%AC%A1%E6%96%B9-m)
把下列各式分解因式:(1)-8a的3次方b²+12ab的3次方c(2)3a(x-y)+9(y-x)(3)(2m-3n)²-2m+3n(4)16mn的4次方-m
把下列各式分解因式:(1)-8a的3次方b²+12ab的3次方c(2)3a(x-y)+9(y-x)
(3)(2m-3n)²-2m+3n(4)16mn的4次方-m
把下列各式分解因式:(1)-8a的3次方b²+12ab的3次方c(2)3a(x-y)+9(y-x)(3)(2m-3n)²-2m+3n(4)16mn的4次方-m
(1)-8a的3次方b²+12ab的3次方c
=-4ab²(2a²-3bc)
(2)3a(x-y)+9(y-x)
=3a(x-y)-9(x-y)
=3(x-y)(a-3)
(3)(2m-3n)²-2m+3n
=(2m-3n)²-(2m-3n)
=(2m-3n)(2m-3n-1)
(4)16mn的4次方-m
=m(16n^4-1)
=m(4n²+1)(4n²-1)
=m(4n²+1)(2n+1)(2n-1)
(1)-8a的3次方b²+12ab的3次方c
=-4ab²(2a²-3bc)
(2)3a(x-y)+9(y-x)
=3(x-y)(a-3)
(3)(2m-3n)²-2m+3n
=(2m-3n)(2m-3n-1)
(4)16mn的4次方-m
=m(16n的4次方-1)
=m(4n²-1)...
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(1)-8a的3次方b²+12ab的3次方c
=-4ab²(2a²-3bc)
(2)3a(x-y)+9(y-x)
=3(x-y)(a-3)
(3)(2m-3n)²-2m+3n
=(2m-3n)(2m-3n-1)
(4)16mn的4次方-m
=m(16n的4次方-1)
=m(4n²-1)(4n²+1)
=m(2n-1)(2n+1)(4n²+1)
收起
1.4ab² (3bc-2a²)
2.(x-y)(3a-9)=3(x-y)(a-3)
3.(2m-3n)(2m-3n-1)
4.m(16n^4-1)==m(4n²-1)(4n²+1)
=m(2n-1)(2n+1)(4n²+1)
望采纳!