Question

(AB' + CD) (B'E + CD)

Answer 1

LET CD = Z

(AB' + Z)(B'E + Z)

AB'B'E + AB'Z + B'EZ + ZZ

AB'B'E + AB'Z + B'EZ + Z

AB'E + AB'Z + B'EZ + Z

AB'E + Z ( AB' + B'E + 1)
AB'E + Z(0) = AB'E+ Z

Answer 2

FOIL ?

Answer 3

anyone can confirm?

Answer 4

i'm just not sure about AB'B'E = AB'E


since B'*B' is B'

Answer 5

(AB' + CD) (B'E + CD)

AB'E + B'CDE + AB'CD + CD

AB'E + CD(B'E + AB' + 1)

AB'E + CD(1)

AB'E + CD

Answer 6

yeah mixed the basic theorems up

Answer 7

x+1 = 1

Answer 8

x*1 = x

Answer 9

x*x = x

x+x = x

Answer 10

got any simple ways to remember this

Answer 11

x and true = x?

Answer 12

yes

Answer 13

yes that's true but how would you think of it in english to grasp the concept

Answer 14

whats the definition of AND ?

Answer 15

both the statements must be true for AND to evaluate to true, right ?