Question

The expression for calculating the sum of
first n term of an arithmetic sequence is

${3n}^{2} - 2n$

a) Find the first term of the arithmatic sequence.
b) Find the common difference
c) write the sequence
d) Find its algebraic expression.
e Find the sum of first 25 terms of this
Sequence​

Answer 1

Answer:

a) 3x^2

b) variable n

c)

d) n

e)

Step-by-step explanation:

This is all I know I don't know the answer for c and e Sorry

PLEASE MARK ME AS BRAINLIEST!!!!!