How do i find the compliment of (A union B)?

The complement of A ∪ B is the set of all elements not in A ∪ B.

If x is some element of A ∪ B, then x is either in A or B (or both).

So if x is some element of the complement of A ∪ B, that means x does not belong to A or B. In other words, x is not in A and x is not in B.

So (A ∪ B)' = A' ∩ B', where the ' symbol denotes set complement.

For example, if A = {1, 2, 3, 4} and B = {3, 4, 5, 6} are both subsets of U = {0, 1, 2, 3, 4, 5, 6, 7}, then

A ∪ B = {1, 2, 3, 4, 5, 6}

→   (A ∪ B)' = {0, 7}

Put another way,

A' = {0, 5, 6, 7}

B' = {0, 1, 2, 7}

→   A' ∩ B' = {0, 7}

and we see that both (A ∪ B)' and A' ∩ B' are the same set.

took the test it's 94

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10