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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