若:|x+根号3|+(y-根号3/3)^2=0,则:(x·y)^1999等于多少?
问题描述:
若:|x+根号3|+(y-根号3/3)^2=0,则:(x·y)^1999等于多少?
答
|x+根号3|>=0
(y-根号3/3)^2>=0
|x+根号3|+(y-根号3/3)^2=0
|x+根号3|=0
(y-根号3/3)^2=0
x=-根号3
y=根号3/3
(x*y)^1999=-1为什么x=-根号3
y=根号3/3
(x*y)^1999=-1
呢还有*是乘吗