2. For a real number 1, consider the open sentences P(x): 2 = 2. Q(x): (x + 1)2 = 0. (a) Express the implication P(2)Q(x) in words. (b) Give an example of a real number a such that P(a) Q(a) is true. (c) Give an example of a real number b such that P(6) Q(6) is false