SOLUTION: Hello everyone, This is my problem: Find all numbers for which the rational expression is undefined m^3-3m/m^2-4

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: Hello everyone, This is my problem: Find all numbers for which the rational expression is undefined m^3-3m/m^2-4      Log On


   

Question 460631: Hello everyone,
This is my problem:
Find all numbers for which the rational expression is undefined
m^3-3m/m^2-4
Found 3 solutions by sudhanshu_kmr, JimboP1977, rwm:
Answer by sudhanshu_kmr(1152) About Me  (Show Source):
You can put this solution on YOUR website!
this expression will undefined for m = 2 or -2.

Everyone is welcome to get free online help: sudhanshu.cochin@gmail.com

Answer by JimboP1977(311) About Me  (Show Source):
You can put this solution on YOUR website!
The rational expression will be undefined if the bottom half of the expression is equal to zero as we can not divide anything by zero.
there when m = 2 or m = -2
The graph below shows this:
If we grapth the expression we can see this is true:
+graph%28+300%2C+200%2C+-10%2C+10%2C+-10%2C+10%2C+%28x%5E3-3x%29%2F%28x%5E2-4%29%29+

Answer by rwm(914) About Me  (Show Source):
You can put this solution on YOUR website!
when m^2-4=0