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(a-b)^2 Expansion and Visualisation

Write down th...

Question

Write down the $6$ th term of the sequence whose $n$ th term is
$(- 1)^{n} (\frac{3 n + 2}{5})$

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Solution

$a_{n} = {(- 1)}^{n} (\frac{3 n + 2}{5})$
$a_{6} = {(- 1)}^{6} (\frac{3 \times 6 + 2}{5}) = 4$

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