2. Prove that 3 + 2root 5 is irrational.
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To prove: 3 + 2√5 is an irrational number. Proof: Let us assume that 3 + 2√5 is a rational number. This shows (a-3b)/2b is a rational number.
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Step-by-step explanation:
since root to a irrational the whole statement is irrational only
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