Question

if nth term of an ap is 3n-5.find the common difference​

Answer 1

Answer:

3

Step-by-step explanation:

STEPS ARE IN ATTACHMENT

Answer 2

Step-by-step explanation:

Given :

nth term of an A.P is 3n - 5.

To find :

The common difference (d).

Solution :

Common difference = ${a_{n}}-a_{n-1}$

We have,

$a_{n}$ = 3n + 5

$a_{n-1}$ = 3(n - 1) + 5

• 3n - 3 + 5
• 3n + 2

Common difference (d) = ${a_{n}}-a_{n-1}$

• (3n + 5) - (3n + 2)
• 3n + 5 - 3n - 2
• 3

∴ The common difference is 3.

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