GUYS I DONT KNOW WHAT TO DO IM STRESSING A BUNCH OH NO PLEASE HELP WHAT IS OBAMAS LAST NAME I REALLY NEED THIS FOR PRESIDENT OBAMA HEL

omg lol also it's Obama you just said his last name

Step-by-step explanation:

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く|)へ <~~me

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┓┓┓┓┓┃ ノ) <-- you

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you already said it

Step-by-step explanation:

just look him up

If X and Y are Boolean variables, then X + Y represents disjunction (OR) and XY represents conjunction (AND), and X' denotes the negation (NOT). So X + Y = 1 if either X = 1 or Y = 1, and XY = 1 only if both X = 1 or Y = 1.

Now,

(X + Y) (X + Y') = XX + YX + XY' + YY'

… = X + X (Y + Y') + 0

… = X + X

… = X

or in table form,