Question: please explain the answer. 4. Apply De Morgan's Laws to the expression to obtain an equivalent expression in which each negation sign applies directly to

please explain the answer.

4. Apply De Morgan's Laws to the expression to obtain an equivalent expression in which each negation sign applies directly to a predicate. For example, x(P(x)Q(x)) is an acceptable final answer, but not xP(x) or x (P(x)Q(x)) x(P(x)Q(x))

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