Edexcel Paper 2 2022 June — Question 11

Exam BoardEdexcel
ModulePaper 2 (Paper 2)
Year2022
SessionJune
TopicTrig Proofs
  1. Prove, using algebra, that
$$n \left( n ^ { 2 } + 5 \right)$$ is even for all \(n \in \mathbb { N }\).
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