题目内容
下列计算中正确的有________个
(1)4x3y÷2xy=2x2y;
(2)9m6n3÷3m3n2=6m4;
(3)(3xy2)3÷3x2y3=9x3y3;
(4)162m÷82m=22m.
A.1
B.2
C.3
D.4