SOLUTION: Find the domain of f(x) = (x-3)/(x^2-3x-4)

Algebra ->  Rational-functions -> SOLUTION: Find the domain of f(x) = (x-3)/(x^2-3x-4)      Log On


   

Question 1199849: Find the domain of f(x) = (x-3)/(x^2-3x-4)
Answer by ikleyn(53763) About Me  (Show Source):
You can put this solution on YOUR website!
.

The domain is the set of all real numbers, except of zeroes of the quadratic polynomial in the denominator 

(which are 4 and -1 and can be found by factoring

    x^2-3x-4 = (x-4)*(x+1) ).

Solved.