hmohamednamees hmohamednamees
  • 09-02-2020
  • Mathematics
contestada

Find the nth term of this quadratic sequence

4,7,12,19,28

Respuesta :

PollyP52 PollyP52
  • 09-02-2020

Answer:

nth term = n^2 + 3.

Step-by-step explanation:

                      4    7   12   19   28

Differences       3    5    7     9

Differences          2    2    2

So the nth term contains n^2.

                          4   7   12   19   28

Values of n^2    1   4    9    16   25

Differences       3   3    3    3     3

So the nth term = n^2 + 3.

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