Answer:
Explanation:
[tex]\frac{\sqrt{90} }{\sqrt{20}} = \sqrt\frac{90}{20} = \sqrt{\frac{9}{2}} = \frac{3}{\sqrt{2} }[/tex]
Now for some explanations.
- sqrt(90)/sqrt(20) can be put under 1 square root sign.
- When you do that, 10 divides into both numerator and denominator.
- The sqrt(9) = 3
- The square root of 2 cannot be reduced, but you can rationalize it by multiplying top and bottom by sqrt(2)
3 sqrt(2)
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sqrt(2)*sqrt(2)
Answer
3 * sqrt(2)
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2
