3 years ago

BRAINLIEST NEED HELP ASAP ALOT OF POINNTS

Mathematics

2 answers:

jeka57 [31]3 years ago

8 0

Answer:I believe it is -4

Step-by-step explanation:

Ivanshal [37]3 years ago

6 0

-7 is the correct answer

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See proof below

Step-by-step explanation:

We have to verify that if we substitute $a_n=4^n+2(-1)^n$ in the equation $a_n=3a_{n-1}+4a_{n-2}$ the equality is true.

Let's substitute first in the right hand side:

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Now we use the distributive laws. Also, note that $(-1)^{n-1}=\frac{1}{-1}(-1)^n=(-1)(-1)^{n}$ (this also works when the power is n-2).

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