E(x) = 9 - 4 - x + 10 = 5-x+10
E(0) = 5-0+10=15
E(2)= 5-2+10=3+10=13
E(-1)= 5+1+10=16
E(1/6) =5-1/6+10 = 30/6-1/6+60/6= 89/6
E(-1/2)= 5 + 1/2 + 10 = 10/2 + 1/2 + 20/2 = 31/2
E(1/6)= 5-1/6 + 10 = 30/6-1/6+60/6=89/6
E(radical din 3) = 5- radical din 3 + 10
E( - radical din 2 ) = 5- radical din 2 + 10