Question 989597


f(x) = x^2 - 3x is a parabola and polynomial. The domain of a polynomial is all real numbers. 
To find the reals we want to omit from the domain of f(x) = x^2 - 3x:


x^2 - 3x is x(x-3) = 0


Therefore, x = 0 and x-3 = 0 --> x = 3


So the domain is all real numbers except {0,3}. 

{{{(matrix(1,3,

-infinity,",",0))}}}{{{U}}}{{{(matrix(1,3,

0,",",3))}}}{{{U}}}{{{(matrix(1,3,3,",",infinity))}}}