SOLUTION: simplify sqrt180 - sqrt120

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Question 466254: simplify
sqrt180 - sqrt120
Answer by algebrahouse.com(1659) About Me  (Show Source):
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√180 - √120
= √36 √5 - √4 √30 {broke down 180 and 120 into two factors, one having a perfect square root}
= 6√5 - 2√30 {evaluated square roots o f 36 and 4}

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