Question

if a,( a - 2 )and 3 a are in AP then what is the value of a?​

Answer 1

Answer:

a= -2

Step-by-step explanation:

Given that a,a-2,3a are in AP.

We know that a2 - a1 = a3 - a2

                      (a-2) - a = 3a - (a - 2)

                      -2 = 2a + 2

                      a = -2.