|x+5|+(y-3)²+(z+1)²=0
求x,y,z,另外请教我做这种题的方法、窍门
人气：252 ℃ 时间：2020-05-09 10:26:40
解答
因为|x+5|+(y-3)²+(z+1)²=0
所以|x+5|=0,(y-3)²=0,(z+1)²=0
所以x+5=0,y-3=0,z+1=0
所以x=-5,y=3,z=-1
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