Simplify the following expressions in (1) sum of the products and (2) products of sums:

a) x′z′ + y′z′ + yz′ + xy

b) ac′ + b′d + a′cd + abcd

c) (a′ + b′ + d′) (a + b′ + c′) (a′+ b + d′)(b+ c′ + d′)

i think its d if im not mistaken

the answer is clip art

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