Answer:

Step-by-step explanation:
We are to factorize the expression
completely. To do this, we will apply the expression below;
The expression can be rewritten as 
To factorize the expression, we need to first factorize
first

The we will make
the subject of the formula as shown;




This last result gives the expansion of the expression
Answer:
Step-by-step explanation:
this picture has a blue circle with a line through it i dont know what to help you with if you could tell me the equation then i can help you but i cant if there is a blue circle in it.
Answer:
The statement is false.
Step-by-step explanation:
If the modeling is with multiple variables it is necessary for all the variables to be modeled well such that the criticality of the model is dependent on all the variograms. It is not dependent on the cross variograms only.
I would think this is many solutions, the reason is because, there is no specific answer (y) so, x could be anything because it would have to equal to y, which could also be anything! I hope im right! Sorry if im wrong!