Có ai biết làm toán cao cấp 2 phần đại học ko , help me:((
1 answer:
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The rule of a geometric sequence:
We have:
Find
substitute:
The polynomial remainder theorem says that dividing a polynomial by
leaves a remainder of
if
is a factor of
. In this case, check
and
.
From the first equation,
and substituting into the second gives