搜索
合并同类项:
(1)$\frac {1}{4}ab^{2}-5a^{2}b-\frac {3}{4}a^{2}b+0.75ab^{2}$;
(2)$2x^{2}y-2xy-4xy^{2}+xy+4x^{2}y-3xy^{2}$;
(3)$-\frac {1}{3}xy+(-\frac {2}{5}x^{2})-\frac {1}{2}x^{2}-(-\frac {1}{6}xy)$;
(4)$3(a-b)-4(a-b)-5(a-b)$;
(5)$3(n-m)^{2}-7(n-m)+8(n-m)^{2}+6(n-m)$;
(6)$-3(a-3b)^{3}+2(3b-a)^{2}+4(a-3b)^{2}+2(3b-a)^{3}$.
(1)$\frac {1}{4}ab^{2}-5a^{2}b-\frac {3}{4}a^{2}b+0.75ab^{2}$;
(2)$2x^{2}y-2xy-4xy^{2}+xy+4x^{2}y-3xy^{2}$;
(3)$-\frac {1}{3}xy+(-\frac {2}{5}x^{2})-\frac {1}{2}x^{2}-(-\frac {1}{6}xy)$;
(4)$3(a-b)-4(a-b)-5(a-b)$;
(5)$3(n-m)^{2}-7(n-m)+8(n-m)^{2}+6(n-m)$;
(6)$-3(a-3b)^{3}+2(3b-a)^{2}+4(a-3b)^{2}+2(3b-a)^{3}$.
答案：
(1)$ab^{2}-\frac {23}{4}a^{2}b$
(2)$6x^{2}y-xy-7xy^{2}$
(3)$-\frac {1}{6}xy-\frac {9}{10}x^{2}$
(4)$-6a+6b$
(5)$11(n-m)^{2}-n+m$
(6)$-5(a-3b)^{3}+6(a-3b)^{2}$
(1)$ab^{2}-\frac {23}{4}a^{2}b$
(2)$6x^{2}y-xy-7xy^{2}$
(3)$-\frac {1}{6}xy-\frac {9}{10}x^{2}$
(4)$-6a+6b$
(5)$11(n-m)^{2}-n+m$
(6)$-5(a-3b)^{3}+6(a-3b)^{2}$
查看更多完整答案，请扫码查看
