Answer:
A
Step-by-step explanation:
We take a look at this expression: and notice that both terms are square numbers.
and
.
There is a specific formula that I highly recommend you memorize involving differences of squares. It states that given the difference of squares , it can always be factored into
.
Here, we can apply that. In this case, a = 7x and b = 3. So:
Thus, the answer is A.
Hope this helps!
Answer:
Step-by-step explanation:
We need to check each u value to say if each one is correct...
8 u - 27
when u = 33
8 33 - 27
8 6
and it's true!
So, 33 is solution
when u = 39
8 39 - 27
8 12
It isn't true. No solution!
When u = 31
8 31 - 27
8 4
It's true and it also is a solution.
when u = 35
8 35 - 27
8 8
it's true and it also is a solution.
Answer:
a) see graph
b) No
Step-by-step explanation:
The given relation is
{}
The arrow diagram is shown in the attachment.
b) The relation is not a function because -2 alone maps onto two different y-values.
One-to-many relation cannot be a function.
