SOLUTION: Need assistance please with applications using rational equatins and proportions. thanks for your help Find all numbers for which the rational expression is not defined. 3/x

Question 21815: Need assistance please with applications using rational equatins and proportions. thanks for your help
Find all numbers for which the rational expression is not defined.
3/x
4/x-6
x+5/x^2-36
x2-3x+2/x^2+x-30
Answer by rapaljer(4671) (Show Source): You can put this solution on YOUR website!
Denominators can NEVER equal zero. Therefore, the following values are NOT allowed, because they would make the denominators equal to zero.

x cannot equal zero!

x cannot equal 6, because that value of x makes the denominator zero. NOT allowed!

Factor the denominator:

x cannot equal either +6 or =6!

Factor the numerator and denominator:

x cannot equal -6 or +5, since these values make denominators zero.

R^2 at SCC

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