分解因式 (1)24m2+18m; (2)9a2-1/4b2; (3)m(x-y)+2(y-x); (4)(x+y)2-10(x+y)+25; (5)a4-16b4.
问题描述:
分解因式
(1)24m2+18m;
(2)9a2-
b2;1 4
(3)m(x-y)+2(y-x);
(4)(x+y)2-10(x+y)+25;
(5)a4-16b4.
答
(1)24m2+18m=6m(4m+3);(2)9a2-14b2=(3a+12b)(3a-12b);(3)m(x-y)+2(y-x)=m(x-y)-2(x-y)=(x-y)(m-2);(4)(x+y)2-10(x+y)+25=(x+y-5)2;(5)a4-16b4=(a2+4b2)(a2-4b2)=(a2+4b2...