Question 176666
Just like any other fractions.


{{{(a/b)(c/d) = ac/bd}}} regardless of whether a, b, c, and/or d are numbers or polynomial expressions.  Of course, the {{{ac/bd}}} result may need to be reduced to lowest terms.


Likewise {{{(a/b)/(c/d) = (a/b)(d/c)= ad/bc}}}.  Again, the {{{ad/bc}}} result may need to be reduced to lowest terms.


Lastly, you must exclude values of a variable that would cause any denominator to equal zero.  For example:


{{{(x^2 + 8x - 17)/(x - 2)}}} is undefined for {{{x = 2}}}