问题:
下列各式计算正确的是
A.2a2+3a2=5a4
B.(-m)2(-n2)3=-m2n6
C.(2b2)3=8b5
D.(3xy)2÷(xy)=3xy
下列各式计算正确的是
A.2a2+3a2=5a4
B.(-m)2(-n2)3=-m2n6
C.(2b2)3=8b5
D.(3xy)2÷(xy)=3xy
A.2a2+3a2=5a4
B.(-m)2(-n2)3=-m2n6
C.(2b2)3=8b5
D.(3xy)2÷(xy)=3xy
参考答案: