Question

PA de (x-8),2x,(2x+12)

Answer 1

Olá!!

A1 = x-8
A2 = 2x
A3 = 2x+12


   (2x)-(x-8) = (2x+12)-(2x)
  
2x-x+8 = 2x+12-2x

2x-x-2x+2x = 12-8

x = 4   




PA  =  (4-8) , (2.4), (2.4 + 12)

PA = ( -4, 8 , 20,...)