Question

нужно решить задачу плээз

Answer 1

х+у=6
x=6-y

log(2)x+log(2)y=3
log(2)x*y=3
xy=2³
xy=8
(6-y)y=8
6y-y²=8
y²-6y+8=0
D=6²-4*8=36-32=4=2²
y=(6±2)/2
y1=8/2=4
y2=4/2=2=>
x1=6-4=2
x2=6-2=4
(4;2)(2;4)