Question

O 4 termo da P.A. (6,3,...)

Answer 1

n1=6
n2=n1+r=3
r=6+r=3>r=3-6>.-3
n3=n1+2r=3
n4=n1+3r>n4=6+3(-3)
n4=6-9=-3
P.A(6,3,0,-3)
Espero Ter Ajudado *.*