Learn how to prove that root 5 is irrational using contradiction method, long division method, and examples. Find out the definition, properties, and examples of rational and irrational numbers. Prove that 2 + 3 5 is an irrational number , given that 5 is an irrational number . Learn how to use the method of contradiction to show that √ 5 is not a rational number. Follow the step-by-step proof with explanations and examples.

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