Question

ayúdeme por favor lo necesito rápido​

Answer 1

Respuesta:

2, - 7, - 43, - 70

2, 3, 6, 15

Explicación paso a paso:

5 - 3n^2

n = 1,

5 - 3 ( 1 )^2

= 5 - 3 ( 1 )

= 5 - 3

= 2

n = 2,

5 - 3 ( 2 )^2

= 5 - 3 ( 4 )

= 5 - 12

= - 7

n = 4,

5 - 3 ( 4 )^2

= 5 - 3 ( 16 )

= 5 - 48

= - 43

n = 5,

5 - 3 ( 5 )^2

= 5 - 3 ( 25 )

= 5 - 75

= - 70

n ( n + 1 ) / 2

n = 1,

1 ( 1 + 1 ) / 2

= 1 ( 2 ) / 2

= 2 / 2

= 1

n = 2,

2 ( 2 + 1 ) / 2

= 2 ( 3 ) / 2

= 6 / 2

= 3

n = 3,

3 ( 3 + 1 ) / 2

= 3 ( 4 ) / 2

= 12/ 2

= 6

n = 5,

5 ( 5 + 1 ) / 2

= 5 ( 6 ) / 2

= 30 / 2

= 15