构成联立方程组
问题描述：
构成联立方程组
2xy*4y-2z=1080
2z+7y-4x=75
4-2x+y=90
求X,Y,Z
答
X= 0.00934063110.84511098*i-43.00467 -0.84511098*i-43.00467Y=86.0186811.690222*i-0.0093406311 -1.690222*i-0.0093406311Z=-263.5467 -4.2255549*i-48.4766484.2255549*i-48.476648