Question

Termino 20 de 3,7,13,21

Answer 1

Respuesta:

421

Explicación paso a paso:

1,    3,    7,    13,    21

 +2   +4   +6    +8

     +2   +2   +2

r = 2

m₀ = 2

t₀ = 1

a = r / 2 = 2 / 2 = 1

b = m₀ - a = 2 - 1 = 1

c = t₀ = 1

Utilizar:  tₓ = ax² + bx + c

tₓ = x² + x + 1

t₂₀ = (20)² + 20 + 1

t₂₀ = 400 + 20 + 1

t₂₀ = 421