题目内容
(-xm-1yn+1)2=
A.-x2m-2y2n+2
B.x2m-2y2n+2
C.-
D.x2m-1y2n+1
计算(-xm-1yn-1)2________;(-3×103)2________.
若(xm-1yn+1)3=x6y9,则m=________,n=________.