1)tg(3x+pi/4)+1=0 2)2cos(3x/2-pi/3)=-1 3)2sin x - 1 / 2cos x +√3)=0

Tg(3x/2-π/3)=-1
3x/2-π/3=-π/4+πk
3x/2=π/3-π/4+πk
3x/2=π/12+πk
x=2/3*π/12+2/3*πk
x=π/18+2k/3
2)cos(3x/2-π/3)=-1/2
3x/2-π/3=±(π-π/3)+2πk
3x/2=π/3±2π/3+2πk
x=2/3(π/3±2π/3+2πk)