Problem Bank | IB Math AAHL

[Maximum mark: 5]

Prove by contradiction that if a2+ab+b2 is even, then a−b is even.

[5]

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[Maximum mark: 5]

Prove by contradiction that if a2+ab+b2 is even, then a−b is even.

[5]

Ask Plex AI about this problem

Get hints, ask questions, and work through this problem step by step

I'm Plex, here to help with problems on this worksheet!