# Please Help With Boolean Algebra?

I have a test today and I just did some questions on simplifying using boolean theorem and I wanna know if I'm doing them right.

1. (A+B)(C+D)+(AB)+(CD)

2. ((āb)+a)((a+b)+b)

3. (AB+C)+(ABC)

1. (A+B)(C+D)+(AB)+(CD)

2. ((āb)+a)((a+b)+b)

3. (AB+C)+(ABC)

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