若|x-1|+|y-2|+|z-3|=0,则(x+1)(y-2)(z+3)的值是多少?
1个回答
|x-1|+|y-2|+|z-3|=0
x-1=0 y-2=0 z-3=0
x=1 y=2 z=3
(x+1)(y-2)(z+3)
=(1+1)(2-2)(3+3)
=0
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