Question

Find the first three terms of the sequence below. T, = n² – 2n - 3​

Answer 1

Substitute 1 In to get the first term to be T1=-4 then substitute 2 in to get the second term T2=-3 and substitute 3 for the third term T3=0

Answer 2

-4, -3, 0

Explanation:

Use the values 1, 2, 3 for n:

t1 = 1² -2·1 -3 = 1 -2 -3 = -4

t2 = 2² -2·2 -3 = 4 -4 -3 = -3

t3 = 3² -2·3 -3 = 9 -6 -3 = 0

The first three terms are -4, -3, 0.