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
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/24 01:51:06
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)...
全部展开
(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!