This is a free lesson from our course in Algebra II
This lesson explains how to divide square roots radicals and rationalize the denominator. Dividing square roots is similar to simplifying
a fraction to lowest terms. For all radicals whose denominators are not equal to
0, divide coefficients, divide radicands, and simplify it. If there is a square root in the denominator of
the fraction, you need to simplify by multiplying both the numerator and denominator
by the square root that is in the denominator. It may be noted this step will not
change the value of the fraction; only its form is changed. This is called 'rationalizing
the denominator'.To rationalize take the radical from the denominator, multiply the numerator
and denominator by the radical as it appears in the denominator. E.g. 3/5
on simplification, yields 35/5.
(More text below video...)
(Continued from above)
If there is a binomial radical expression E.g. (a + bc)
in the denominator, we will multiply by the conjugate.
To find the conjugate of (a + bc)
switch the sign between them. For example, 5/(4 + 23)
simplifies to (10  53)/2.
It may appear to be hard to understand, but will be much easier once you learn with
the help of some examples instructor explains using audio, video presentation in
own hand writing.
Winpossible's online math courses and tutorials have gained rapidly popularity since
their launch in 2008. Over 100,000 students have benefited from Winpossible's courses...
these courses in conjunction with free unlimited homework help serve as a very effective
mathtutor for our students.

All of the Winpossible math tutorials have been designed by topnotch instructors
and offer a comprehensive and rigorous math review of that topic.

We guarantee that any student who studies with Winpossible, will get a firm grasp
of the associated problemsolving techniques. Each course has our instructors providing
stepbystep solutions to a wide variety of problems, completely demystifying the
problemsolving process!

Winpossible courses have been used by students for help with homework and by homeschoolers.

Several teachers use Winpossible courses at schools as a supplement for inclass
instruction. They also use our course structure to develop course worksheets.