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help this is one thats to hard

Sagot :

We are given the following sequence:

[tex]6,-20,58[/tex]

The formula that we can use to obtain the sequence is the following:

[tex]a_n=-3a_{n-1}-2,a_1=6[/tex]

Because when we replace the given terms we get:

[tex]\begin{gathered} a_2=-3(6)-2 \\ a_2=-18-2 \\ a_2=-20 \end{gathered}[/tex]

For the next term:

[tex]\begin{gathered} a_3=-3(-20)-2 \\ a_3=60-2 \\ a_3=58 \end{gathered}[/tex]

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