SOLUTION: square root of 45 plus square root of 180?

SOLUTION: square root of 45 plus square root of 180?

Algebra.Com

Question 623435: square root of 45 plus square root of 180?
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
sqrt(45)+sqrt(180)

sqrt(9*5)+sqrt(36*5)

sqrt(9)*sqrt(5)+sqrt(36)*sqrt(5)

3*sqrt(5)+6*sqrt(5)

(3+6)*sqrt(5)

9*sqrt(5)

So sqrt(45)+sqrt(180) = 9*sqrt(5)
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