Question

The nth term of an AP cannot be 3n² +5. Justify your answer.​

Answer 1

Answer:

the nth term can't be of the form  3n²+5

Step-by-step explanation  

we can prove this by chechking whether an AP made using the given nth trerm.

ans. attached as an image : )

Answer 2

Step-by-step explanation:

The nth term of an AP can't be n2+1. Difference between first and second term = 5 - 2 = 3. Their common difference is not equal. In A.P,common difference should not be equal, so this series can't be A.P.