This is a free lesson from our course in Algebra I
In this lesson, you'll learn how to work with polynomials using the concept of ratios. You'll also see how to factor the numerator and the denominator of a rational expression, cancel out the common factors
and reduce the expression into its lowest terms. For example, let's say you have
to simplify the expression (9b^{2}  4)/(3b^{2 }
 11b + 6). To do this, you can factor the numerator 9b^{2}
 4 to arrive at (3b + 2)(3b  2), and the denominator 3b^{2}
 11b + 6 to get (3b  2)(b  3). As both the expressions
have a common factor, i.e. (3b  2), it is canceled out, and the remaining
simplified expression is (3b + 2)/(b  3).
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.