(3-5)x>4
-2x>4
x<-2; x ∈ (-∞;-2);
x ∈ (;∞)
F(-3)=2·(-3)²=2·9=18.
F(2)=2·2²=8.
F(4)=-4+3=-1.
F(6)=-6+3= -3.