Question

Find 2nd term of an AP if ᵃn =2n²+n. Please say the answer correctly....​

Answer 1

Answer:

Step-by-step explanation:

Given that,

an = 2n² + n

Substituting n = 1

a1 = 2 ( 1 )² + 1 = 2 + 1 = 3

Similarly,

a2 = 2 ( 2 )² + 2 = 8 + 2 = 10

a3 = 2 ( 3 )² + 3 = 18 + 3 = 21

a4 = 2 ( 4 )² + 4 = 32 + 4 = 36

Hence, the 2nd term of an A. P. is 10