Can u explain how u answer this question?

Value of given expression  when p = -4 and q = 2  is -4.

Step-by-step explanation:

Given expression ,

We have to evaluate the value of the expression when p = -4 and q = 2

Consider the expression given

To find the value a the given value just put the values in the  given expression

  becomes  

Solve further to get its value,

Thus, value of given expression  when p = -4 and q = 2  is -4.

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explanation:

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step-by-step explanation:

the word superfluous means unnecessary