Find the first four terms of an AP whose first term is - 2 and the common difference is – 2.

Given: a = -2

d = -2

To find: The first four terms of AP

Formula Used: nth term of an AP is:

a_{n =} a + (n - 1) d

Explanation:

First term, a = - 2

Second Term, d = - 2

a_{1 =} a = - 2

using formula

a_{n =} a + (n - 1) d

a_{2 =} a + d = - 2 + (- 2) = - 4

similarly

a_{3 =} - 6

a_{4 =} - 8

so, A.P is

- 2, - 4, - 6, - 8