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数学
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已知:2x+y-3的绝对值+根号下(x-3y-5)^2=0 x的y次方=
人气:147 ℃ 时间:2019-08-18 20:02:52
解答
2x+y-3的绝对值+根号下(x-3y-5)^2=0
那么2x+y-3=0 x-3y-5=0
解得:x=2 y= -1
x^y=2^(-1)=1/2
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