simplify 2root45+3root20/2root5 on simplification gives a rational or an irrational number
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2 √(45 + 3 √(20) /2 √(5)
=6√(5) + 6√(5) / 2 √(5)= 6√(5) (2) / 2√(5)= 6
=6√(5) + 6√(5) / 2 √(5)= 6√(5) (2) / 2√(5)= 6
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