x-y+5=0
x+3=0
∴x=-3
y=2
∴3x+2y=-9+4=-5
已知丨x-y+5丨+(x+3)²=0,则3x+2y=?
已知丨x-y+5丨+(x+3)²=0,则3x+2y=?
数学人气:833 ℃时间:2019-08-26 06:47:32
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