Exam-Style Question on Proof
A mathematics exam-style question with a worked solution that can be revealed gradually
Question id: 497. This question is similar to one that appeared on a GCSE Higher paper in 2019. The use of a calculator is not allowed.
Given that \(n\) can be any integer such that \(n \gt 1\), prove that \(n^2 + 3n\) is even.
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