Now add the fractions on the left getting the common denominator. Fortunately, that's not too hard since those denominators have similar factors.
Now, determine where the numerators are 0 (that's easy: x= 0) and where the denominators are 0 (a little harder: solve that polynomial to 0 and factor it. Fortunately, you determined the factors when you formed the common denominator!
The points where the numerator or denominator are 0 separate "+" from "-". The simplest way to figure which is correct for an integerval is to look at the individual factors. An odd number of - factors, negative, and even number of - factors, positive. Also note that as you "step over" x= a, the term x- a is the only one that changes sign.