Answer:
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Hence the correct answer is C) -23
Further explanation:
We have to put the values of m and n into both expression first separately and then multiply the answers.
Given expressions are:

The values are:

Putting the values in expression 1:

Putting the values of m and n in second expression

Multiplying both expressions:

Hence the correct answer is C) -23
Keywords: Polynomials, Putting values in expressions
Learn more about polynomials at:
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after solving
we get 
Step-by-step explanation:
We need to find the value of x in:

Solving:

So, after solving
we get 
Keywords: Solving the expression
Learn more about Solving the expression at:
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