如-果(x+1)²+|2x-y-5|=0,则x+y的值为____
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如-果(x+1)²+|2x-y-5|=0,则x+y的值为____
如-果(x+1)²+|2x-y-5|=0,则x+y的值为____
如-果(x+1)²+|2x-y-5|=0,则x+y的值为____
(x+1)²=0 x=-1
|2x-y-5|=0 y=2x-5=-7
x+y=-8