解方程组 X+Y+Z=0, 4X+2Y+Z=0, Z=2
问题描述:
解方程组 X+Y+Z=0, 4X+2Y+Z=0, Z=2
答
X+Y+2=O
4X+2Y+2=O
X=-Y-2
-4y-8+2Y+2=O
2Y=-6
Y=-3
X=-Y-2
=1
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