Answer:
Answer is D
Step-by-step explanation:
I kinda understand it but it need to be neat so yh next time you have aa problem like this just write it neat for people to understand cleary what is your question.
Answer: i believe
that x does not have a value
Step-by-step explanation:"variable" or sometimes an "unknown"
Answer:
exact form:
9/2
decimal form:
4.5
mixed number form:
4 1/2
Step-by-step explanation: sorry if this wasnt what you were looking for.
We have 3⁴ = 81, so we can factorize this as a difference of squares twice:

Depending on the precise definition of "completely" in this context, you can go a bit further and factorize
as yet another difference of squares:

And if you're working over the field of complex numbers, you can go even further. For instance,

But I think you'd be fine stopping at the first result,

Answer:
Relation 3: yes, it can be a function
Relation 4: no, it cannot be a function
Step-by-step explanation:
in a function, for every input x there can only be one correlating output y.