Question

If the sum of first n term of
an AP is 4n - n² find n th term & 10th term​

Answer 1

Answer:

nth term=n+2

Step-by-step explanation:

s1=a1

so s1=4x1-1 = 3

s2=4x2-2^2 = 4

so common difference is 4-3=1

nth term=a+(n-1)d

=3+(n-1) = n+2

10th term = 10+2

=12 ans

Answer 2

key point is to compare both the sides and get the first term and common difference. If it helps you do mark it as brainliest :)