# Rational Expressions

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• July 22nd 2013, 07:53 PM
asilvester635
Rational Expressions
What do i do next?
• July 22nd 2013, 09:05 PM
topsquark
Re: Rational Expressions
Quote:

Originally Posted by asilvester635
What do i do next?

Now start canceling common factors. Note that 4 -x = -(x - 4).

-Dan
• July 22nd 2013, 09:44 PM
Prove It
Re: Rational Expressions
Quote:

Originally Posted by asilvester635
What do i do next?

First of all, \displaystyle \begin{align*} 4 - x = (2 - x)(2 + x) \end{align*}, NOT \displaystyle \begin{align*} (x - 4)(x + 2) \end{align*}...
• July 22nd 2013, 09:50 PM
asilvester635
Re: Rational Expressions
I did the reciprocal to change the division into multiplication