Question

3 + 3 2 + 3 3 + ⋯ + 3 = 3(3 − 1) 2​

Answer 1

Respuesta:

71 = 12

Explicación paso a paso:

3 + 32 + 33 + 3 = 3 (3 - 1) × 2

3 + 32 + 33 + 3

35 + 33 + 3

68 + 3

    71

71 = 3 (3 - 1) × 2

71 = 3 × 2 × 2

3 × 2 × 2

3 × 2²

3 × 4

 12

71 = 12