Answer:
There are many. Two examples are

Step-by-step explanation:
There are many examples. The simplest is
1 -

It is trivial that

2 -

That function is injective as well.

An example of a function that is NOT injective is

Notice that

Adding
we get 
Option C 4 StartRoot 2 EndRoot i is correct.
Step-by-step explanation:
We need to find the sum of: 
Finding sum:

can be written as 
can be written as 
We know 18 = 2x3x3 = 2x3^2 so,


Adding like terms:

So, adding
we get 
Option C 4 StartRoot 2 EndRoot i is correct.
Keywords: Square root expressions
Learn more about Square root expressions at:
#learnwithBrainly
It will be 1 because your multiplying it by 0
Answer:
4^3
Step-by-step explanation:
4×4×4
Multiply 4 and 4 to get 16.
16×4
Multiply 16 and 4 to get 64.
64=4^3