分解因式:(1)-8a3b2+12ab3c-6a2b(2)3a(x-y)+9(y-x)(3)(2m-3n)2-2m+3n(4)16mn4-m
题型:解答题难度:一般来源:不详
分解因式: (1)-8a3b2+12ab3c-6a2b (2)3a(x-y)+9(y-x) (3)(2m-3n)2-2m+3n (4)16mn4-m |
答案
(1)-8a3b2+12ab3c-6a2b, =-2ab(4a2b-6b2c+3a);
(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)16mn4-m, =m(24n4-1), =m(22n2+1)(22n2-1), =m(22n2+1)(2n+1)(2n-1); |
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