Question

If (2n + 3) is the nth term of an AP, find its common difference.​

Answer 1

Answer:

2

Step-by-step explanation:

nth term is given as (2n + 3)

let n = 1

term 1 = (2*1) + 3

= 5

let n = 2

term 2 = (2*2) + 3

= 7

common difference = term2 - term 1

= 7-5

=2

Answer 2

If (2n + 3) is the nth term of an AP, find its common difference.

solution

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(2n+3)

put value of n

2*1+3=2+3=5

2*2+3=4+3=7

3*2+3=6+3=9 equation (1)

common difference=

second term - first term

a+d)-(a)

here second term is 7

and first is 5 from equation (1)

7-5=2

hence,common difference is 2

thanks

hope its helpful