Question

the first four terms of an AP is 26.if the sum of squares of first and fourth term Is 125,then find the first four terms?

Answer 1

Is 26 is the fourth term ya first four terms of an Ap is 26?

Answer 2

let the terms of the A. P. be a-3d,a-d, a+d and a+3d
sum of four terms of AP,
4a=26
a=6.5
given, (a-3d) ^2+(a+3d)^2=125