Question

sum of nth term of an Ap is 2n²-3n find the first term and common difference

if you answered this question correctly I will mark you brain list and give thanks to you...Dont post some wrong answers..​

Answer 1

Answer:

Frist term = -1 and common difference = 3

Step-by-step explanation:

given

Sum of n terms = 2n²-3n

when n=1

then S1= 2-3= -1

then put n=2 then

S2= 8-6=2

now S2-S1= common difference = 2-(-1)=3

and S1= A1= -1