Question

Solve each inequality algebraically.
x2 - 3x -18 > 0

Answer 1

critical values of x are: 3 and -6
draw your number line:

taking any value of x lying between -6 and 3..for instance:1,and plugging it in the original equation,we then have 1^2-3(1)-18 which is < 0
so,our curve would be:

since we require values of x >0,we have;
x<-6 or x>3