GWD3-23讨论帖没有?大家做做讨论一下??

If x and y are positive integers, and x³y⁴ = 2,000, which of the following is the value of xy?

A.    2

B.    4

C.    8

D.    10

E.    20

2000= 16*125= 2^4*5^3

xy=10

我的想法是2000=2*1000=2*10^3

原题=y*(xy)^3,so xy=10,y=2