如果(y—3)的平方+3x—2y的绝对值是0,那么(-y的x次方)的y次方是?
人气:114 ℃ 时间:2019-08-18 10:08:39
解答
(y-3)^2+|3x—2y|=0
两个非负数的和为0,那么这两个数都是0
y-3=0,3x-2y=0
y=3,x=2
[(-y)^x]^y
=[-3^2]^3
=-9^3
=-729
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