Question

the common difference can be expressed as a)an-an-1 b)an-an-2 c)an-an+1 d)an-5n​

Answer 1

Step-by-step explanation:

common difference means difference between any two consecutive terms is same

.•. The common difference can be expressed as

an - an-1

Answer 2

Answer:

The common difference is an- an-1

Step-by-step explanation:

The difference of a term and it's preceeding term is called the common difference of the AP

It is denoted by d

d= a2-a1=a3-a2=a4-a3=....=an-an-1

Here a is the first term

an is the nth term or the general term of the AP.