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Since you are using a computer you have access to a calculator: click [START] - click [RUN] - type "calc" - hit [ENTER] Answer: √45 + √80 = √245 √45 = 6.7082 √80 = 8.9443 6.7082 + 8.9443 = 15.6525 Or, √45 + √80 = √(5 x 9) + √(5 x 16) = √5 x √9 + √5 x √16 = 3√5 + 4√5 = 7√5

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16y ago

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