Four inequalities: zeros, poles and intersections

Without using a calculator, find the solution sets of the following inequalities.

(a) $\dfrac{(x+2)^2}{x^2-1}\leq0$,

(b) $\dfrac{x^2+2x+2}{x^2-x+2}<0$,

(c) $\dfrac1{(x-1)(x-3)}<-1$,

(d) $1\leq\dfrac1{3x-2}<3$.