(a) Recall that R denotes the set of all real numbers and Q denotes the set of all rational numbers. Show that the following two sets are equal: {x|x(x+x-6) and x 0} and {0, 2,2}\Y, where Y = R\Q. (b) List without repetition all subsets of the set {0, 1, 2}. (c) List without repetition all subsets of the set {0, {0}}.