Question

sa se determine x,y apartine R din egalitatea 2(x+yi)+3(y-2xi)=7-10i

Answer 1

Răspuns:

2(x+yi)+3(y-2xi)=7-10i

2x2yi+3y-6xi=7-10i

2x+3y+2yi-6xi=7-10i

2x+3y+(2y-6x)i=7-10i

2x+3y=7

2y-6x=-10

2x+3y=7

-6x+2y=-10

6x+9y=21

-6x+2y=-10

11y=11

y=1

2x+3x1=7

x=2