Question

Find a10 if the sum of n terms of an A.P. is given by Sn =4n^2-2 ,

Answer 1

Answer:

92

Step-by-step explanation:

here given, a10=? and An=an^2-2..

A1=S1=4(1)^2-2=2, S2=4(2)^2-2=14..

now, A2=S2-S1=14-2=12..

so, d=a2-a1=12-2=10..

therefore, a10= a+9d=2+9(10)=2+90=92...