由|x|=3,x+y=0,且x-y>0,得
x=3,y=-3,
当x=3,y=-3时,
|x+2|-(y-3)2
=|3+2|-(-3-3)2
=5-36
=-31.
已知|x|=3,x+y=0,且x-y>0,求|x+2|-(y-3)2.
已知|x|=3,x+y=0,且x-y>0,求|x+2|-(y-3)2.
数学人气:337 ℃时间:2020-02-06 08:12:45
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