Rationalize the denominator and simplify the expression.   -8/x+9square root5 I am unsure how to remove the square root from the bottom.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter7: Exponents And Exponential Functions
Section7.3: Rational Exponents
Problem 89HP
Question

Rationalize the denominator and simplify the expression.

 

-8/x+9square root5

I am unsure how to remove the square root from the bottom.

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