Помогите. Срочно. 2 и 3 задание.

Спасибо

2)2cos(x/2 -π/6)=√3cos(x/2 -π/6)=√3/2x/2 -π/6=π/6+2πn⇒x/2=π/6+π/6+2πn⇒x/2=π/3+2πn⇒x=2π/3+4πnx/2 =-π/6+π/6+2πn⇒x/2=2πn⇒x=4πn3)ОДХ чЮ0б нЮ0БнЮчlg(y-x)=lg2⇒y-x=2⇒y=x+2log(2)x -4= log(2)3 -log(2)ylog(2)x+log(2)y=log(2)16+log(2)3log(2)x*y=log(2)16*3xy=48x(x+2)-48=0x²+2x-48=0x1+x2=-2 U x1*x2=-48x1=-8∈ОДЗx2=6⇒y=2+6=8