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:
[tex]Exp\ 1:3m-4n\\Exp\ 2: n^2-m[/tex]
The values are:
[tex]m=5\\n=-2[/tex]
Putting the values in expression 1:
[tex]3m-4n\\=3(5)-4(-2)\\=15+8\\=23[/tex]
Putting the values of m and n in second expression
[tex]n^2-m\\=(-2)^2-5\\=4-5\\=-1[/tex]
Multiplying both expressions:
[tex](3m-4n)(n^2-m)=23* (-1)=-23[/tex]
Hence the correct answer is C) -23
Keywords: Polynomials, Putting values in expressions
Learn more about polynomials at:
- brainly.com/question/4142886
- brainly.com/question/4934417
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