Question

If nth term of an ap whose sum of n terms is 4n2-n

Answer 1

Answer:

Step-by-step explanation:

S1=2

S2=4

D=S1-S2

D= 2

Tn= 2+(n-1)2

Tn= 2+2n-2

Tn = 2n

Answer 2

Answer:

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