an=a1 +r (n-1)
a1 + r (n-1) = 3n+5
a1 +r =3n+5 - (n-1)
a1 + r = 3n+5 -n +1
a1 + r = 2n +6 ......ó.....n+3
La razon es 3.
Espero haberte ayudado
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respuesta
an=a1 +r (n-1)
a1 + r (n-1) = 3n+5
a1 +r =3n+5 - (n-1)
a1 + r = 3n+5 -n +1
a1 + r = 2n +6 ......ó.....n+3
La razon es 3.
Espero haberte ayudado