SOLUTION: I need help with solving this equation.Find all numbers for which the rational expression is undefined
n^3-7n/n^2-4 (this problem is division)
Algebra ->
Expressions-with-variables
-> SOLUTION: I need help with solving this equation.Find all numbers for which the rational expression is undefined
n^3-7n/n^2-4 (this problem is division)
Log On
Question 241503: I need help with solving this equation.Find all numbers for which the rational expression is undefined
n^3-7n/n^2-4 (this problem is division) Answer by College Student(505) (Show Source):
You can put this solution on YOUR website! In order for a fraction to be undefine, its denominator would equal to zero. So, let the denominator (by itself) equal to zero and find the solution(s).
.
Take the square root on both sides of the equation to determine the value of n.
Since the square root of a number raised to the 2nd power cancel each other, we can re-write the equation like this:
This will yield two possible answers:
n=2 and n=-2
.
Check:
.
