Question

1+3+5+7... ... ... ... ... ... Up to n terms is equal to

Answer 1

Step-by-step explanation:

a=1

d=2

S(n)=n/2 [ 2a+(n-1)d]

S(n)=n/2 [ 2 +(n-1)7]

S(n)=n/2 [ 2 + 7n - 7]

S(n)={{n/2 X (7n-5)}}