SOLUTION: which real numbers cannot be used in place of the variable in the rational expression? (3b+1)/(b^2-3b-4)

SOLUTION: which real numbers cannot be used in place of the variable in the rational expression? (3b+1)/(b^2-3b-4)

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Question 939889: which real numbers cannot be used in place of the variable in the rational expression?
(3b+1)/(b^2-3b-4)

Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

to have a real solution, denominator cannot be equal to zero; so, find the value(s) of that makes denominator equal to zero
...factor completely
...group

solutions:
if =>
if =>

real numbers and cannot be used in place of the variable in the rational expression

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