Posted by **G** on Wednesday, June 4, 2008 at 1:23pm.

Diving Radicals

Using \/ for radical sign

7 / \/X

This book has been confusing me.

The book gives the answer 7\/X / X.

Isn't the answer 7X?

- Algegra -
**DrBob222**, Wednesday, June 4, 2008 at 1:29pm
When I took algebra many many years ago they called this rationalization of the denominator. For some reason, mathematicians don't seem to like to leave fractions with a sqrt sign in the denominator. This is how you get it out.

7/(sqrt x) =

multiply by sqrt x/sqrt x to obtain

7*(sqrt x)/(sqrt x)*(sqrt x) =

7*(sqrt x)/x.

- Algegra -
**alex**, Tuesday, November 22, 2016 at 11:57am
Simplify. Write each answer in scientific notation.

1) (5.86 × 100

)(7.99 × 100

)

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