Show that the four Bell states are orthonormal. Express the four basis elements | TT), I T4), I LT) and | 4) as linear combinations of Bell states. Consider the two-qubit state vector |P) = = (ITT) + IT!) + I IT) + 1 4)). Show that this state is separable, so can be expressed as |'T) = [PA) @ |TB), and determine IPA) and IT'B)