Simplify this problem and tell the result is a rational or irrational number?
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=(2√45+3√20)/2√5
={2(3√5)+3(2√5)}/2√5
=(6√5+6√5)/2√5
=12√5/2√5
=6
=rational number
={2(3√5)+3(2√5)}/2√5
=(6√5+6√5)/2√5
=12√5/2√5
=6
=rational number
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