Using mathematical induction prove that for \[ {n \ge 1} \in \mathbb{Z} \]
\[ 3^{2k}-1 \] is divisible by 8.

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show it for certain number n ... show it hods for n+1

Yeah I got the base step.
n=1
\[3^2-1=8k\] where k is some Integer.
\[8=8k\] so it's divisible.

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