已知i是洗车虚数单位若实数x,y满足(1+i)(x+yi)=(1-i)(2+3i)试判断点P(x,y)所在的象限

问题描述:

已知i是洗车虚数单位若实数x,y满足(1+i)(x+yi)=(1-i)(2+3i)试判断点P(x,y)所在的象限

左右拆开,
x-y+(x+y)i=5+i,所以,
x-y=5,x+y=1,
x=3,y=-2,p在第四象限