The nth term of a sequence is Tn=5+(n+1)square evaluate T4-T6

T4 = 5 + (4+1)^2 = 5 + 25 = 30

T6 = 5 + (6+1)^2 = 5 + 49 = 54

T4 - T6 = 30 - 54 = -24