Question

the sum of n term of an AP is (3n^2-4n) determine the AP and find its rth term

Answer 1

Answer:

Step-by-step explanation:

Let n=1

Sn=-1

Let sn be 2

Sn=4

A=-1,D=5

Rth term=A+(n-1)D

Rtn=-1+5D-5

Rth=-6+5D.