赞 walkingjie 幼苗
共回答了14个问题采纳率：92.9% 举报
x^(2n-m)
=x^2n/x^m
=(x^n)^2/x^m
=4^2/8
=16/8
=2
x^(3n+2m)
=x^3n*x^2m
=(x^n)^3*(x^m)^2
=4^3*8^2
=64*64
=4096
=x^2n/x^m
=(x^n)^2/x^m
=4^2/8
=16/8
=2
x^(3n+2m)
=x^3n*x^2m
=(x^n)^3*(x^m)^2
=4^3*8^2
=64*64
=4096
1年前
10
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