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the general term or nth term of -2,-5,-8,-11...​

Sagot :

Answer and step-by-step explanation:

To make the general term of the given sequence, find the common difference first by subtracting a term by the previous term.

-5 - (-2) = -3

-8 - (-5) = -3

-11 - (-8) = -3

Thus, the common difference is -3.

Then use the first term and the common difference to form the general term.

The general term is:

[tex]an = - 2 + (n - 1) (- 3)[/tex]

To check if the general term is correct, let's try to find the second term which is already in the given sequence.

a2 = -5

a2 = -2 + (2 - 1)(-3)

a2 = -2 + (1)(-3)

a2 = -2 + -3

a2 = -5

-5 = -5

Therefore, the general term is correct.