SOLUTION: 6sqrt20-2sqrt45

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Question 32556: 6sqrt20-2sqrt45
Answer by mukhopadhyay(490) About Me  (Show Source):
You can put this solution on YOUR website!
6sqrt20-2sqrt45
=2[3sqrt(4*5)-sqrt(9*5)]
=2[6sqrt(5)-3sqrt(5)]
=6sqrt(5)