please answer all parts with solution.

Question 1 (6 points) Simplify the following Boolean Expressions using Boolean Algebra: (a) X1=ABC+ABC+A (b) X2=(B+C)(B+C)+A+B+C Find the complement of the following functions (Simplify the answer if you can): (c) X3=a(b+z(c+a)) (d) X4=a(b+c)+ab (e) Determine which of the following logic circuits are equivalent: (a) (b) (c)