SOLUTION: I can't seem to figure out how to calculate this one. Can you please help? Rationalize the denominator and simplify. Square root of 81 over 40

SOLUTION: I can't seem to figure out how to calculate this one. Can you please help? Rationalize the denominator and simplify. Square root of 81 over 40

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Question 249028: I can't seem to figure out how to calculate this one. Can you please help?
Rationalize the denominator and simplify.
Square root of 81 over 40
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
sqrt(81/40)
=9/sqrt(4*10)
=9/2sqrt(10)
=9/2sqrt(10) * sqrt(10)/sqrt(10) In order to have a rational denominator.
=9sqrt(10)/20
.
Ed
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