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Simplify 2√45 -5√20+ √80 |
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Answer» Answer: Step-by-step EXPLANATION: √45 = 3√5 2√45 = 2 ( 3√5 ) 2√45 = 6√5 √20 = 2√5 5√20 = 5 ( 2√5 ) 5√20 = 10√5 √80 = 4√5 2√45 - 5√20 + √80 = 6√5 - 10√5 + 4√5 = 6√5 + 4√5 - 10√5 = 10√5 - 10√5 = 0 |
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