Question: (b) (6 pts) Prove that any simple undirected graph G = (V, E) with chromatic number equal to 3 and maxi- mum degree at most

(b) (6 pts) Prove that any simple undirected graph G = (V, E) with chromatic number equal to 3 and maxi- mum degree at most three has a bipartite subgraph with at least | E| - | V| /3 edges

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