问题:
下列计算正确的是
A.(3xy)2÷(xy)=3xy
B.(-x4)3=-x12
C.(x+y)2=x2+y2
D.(4x-1)(-4x+1)=16x2-1
下列计算正确的是
A.(3xy)2÷(xy)=3xy
B.(-x4)3=-x12
C.(x+y)2=x2+y2
D.(4x-1)(-4x+1)=16x2-1
A.(3xy)2÷(xy)=3xy
B.(-x4)3=-x12
C.(x+y)2=x2+y2
D.(4x-1)(-4x+1)=16x2-1
参考答案: