
Given a polynomial
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with integer coefficients whose value is divisible by

for three integers
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and

. Prove that
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is divisible by

for all integers
%V0
$(POL 3)$ Given a polynomial $f(x)$ with integer coefficients whose value is divisible by $3$ for three integers $k, k + 1,$ and $k + 2$. Prove that $f(m)$ is divisible by $3$ for all integers $m.$