2. De Morgan's Theorem (20 points total) Simplify the following expressions, using De Morgan's Theorem. (Simplified expressions should only have negation on single variables, nor negated expressions LE(A + B) is okay but (A+B) would need to be simplified) Watch our for trick questions, just because a variable is in an expression, doesn't mean it will be a part of the simplified answert After all, (A+A) ! (Show your work or reasoning for partial credit.) (A + B) (A+B) b. AB7 (A+B) +(C+D) -B) + C *B