SOLUTION: find all numbers for which the following rational expression is undefined. If the rational expression is defined for all real numbers, state so.
5/(z-4)(z+2)
Algebra.Com
Question 1002172: find all numbers for which the following rational expression is undefined. If the rational expression is defined for all real numbers, state so.
5/(z-4)(z+2)
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!
Rational expressions are undefined when the denominator is equal to . Since the denominator is equal to , make it equal to and solve for .
if =>
if =>
the rational expression is defined for all real numbers excluding and
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