Your roots would be x = 4, x = -1 (These are the values that should theoretically satisfy the equality part of the inequality). However, if you plug in x = -1 to your original inequality, you would see that:

So the only root you consider is x = 4. Choose a value higher than 4 and one below 4 to see which region would give you a number less than 1,keeping in mindthat x is only defined over the interval