Question

The characteristic polynomial to the recurrence relation
an = 2an-1 + an-2 is
a) 2x2 + x + 1
b) x2 - 2x - 1
c) x2 + 2x + 1
d) - 2x2 - 2x - 1​

Answer 1

$\huge\mathfrak\pink{♡c) x2 + 2x + 1♡}$