Question

the sum of n terms of an ap is (2nsquare + 3n) find the first term and common difference of this series describe question solution​

Answer 1

Answer:

a=5 d=4

Step-by-step explanation:

first put n=1  to get first term

then put n=2 to get sum of 2 terms which is equal to 14

then you will get 2nd term as 9

so difference between 1st and 2nd term is 4

Please mark as Brainlist answer if you find it helpful

Answer 2

Answer:

sum of n terms=2n²+3n

if we put n=1 then,

S1 = 5,which is A1

if we put n=2 then,

S2= 14,which is A1 + A2

since A1 +A2=14

therefore,A2=14-A1

A2=14-5

A2=9

so common difference=A2 -A1=9-5=4

Step-by-step explanation:

hopefully you got your answer

please mark your brainliest.