Answer:
if you want to factorise it answer will be : (x+y)^2 - 4^2
and if you have to expand it anwer will be x^2 + y^2 + 2xy -16
Neither because they dont have the same x points so they cant be vertical and they dont have the same y points so it cant be horizontal
Answer:
The equation is true.
Step-by-step explanation:
First you divide both sides of the equation by 3. This leaves you with 9-2=7 (notice I rewrote 9+(-2) to 9-2, this is because they mean the same thing one is just easier to look at). Then you add 2 to both sides. This cancels the 2 on the left side and makes the rights side a nine. Since both sides leave you with nine this proves are equal, making it a true equation.
Answer: the answer is 24
Step-by-step explanation:
a. A' means the complement with respect to Z? If so, then
To know A' you need to write all the elements in Z that are not in A.

b. All the subsets of B, is knowed as P(B),

c.
(Add to A the elements of B, or equivalently add to B the elements of A)
d.
express informally speaking the elements that have in common, but there is no element in common, so
