Question

2 power of x-1 +2 power of x+1=2560
Find x

Answer 1

I think the answer is

x = 640

Answer 2

Answer:

(x-1)^2+(x+1)^2 =2560

{(x^2+1-2x)+(x^2+1+2x)} =2560

2x^2+2=2560

2x^2=2558

x^2=1279

x=35.76