Question 653213: Evaluate the expression square root of 90 over square root of 10??
Found 2 solutions by Shana-D77, MathTherapy:
Answer by Shana-D77(132)   (Show Source):
You can put this solution on YOUR website! When dealing with square roots, you always want to think about the square numbers (1, 4, 9, 16, 25...) that are multiples of the number you're given.
In sqrt(90), we can think of sqrt(9*10). 9 is a square number. Its square root is 3.
So, (sqrt(90))/(sqrt(10)) =(sqrt(9)*sqrt(10)) / (sqrt(10))
The sqrt(10) on top will cancel with the sqrt(10) on bottom, leaving just sqrt(9) on top. Well, what's the square root of 9?
3!
Answer by MathTherapy(10552)  (Show Source):
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