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Verified Answer :

Correct answers are C and D.

m = 1, n = 2

Substitute in all expressions.

a) (2×1+2)(1-2)=-4
b) \((1+2^2)+(1-2^2)=5+(-3)=2\)
c) \(1^2+1\times2+2^2=7\)
d) 1+2=3

The equations C and D will give the odd number after the solution.

What is an odd number?

A number that cannot be split by two to produce two equal numbers will be an odd number.

Given;

If m is an odd integer and n an even integer,

Assume,

m=1

n=2

Put the values one by one in the options;

a)

\(\frac{(2m+n)}{(m-n)} \\\\ \frac{(2\times 1+2)}{(1-2)} \\\\ -4\)

b)

\({ (m+n^2)+(m-n^2)\)

\({ (1+2^2)+(1-2^2)\)

\(2\)

c)

\(\rm m^2+mn+n^2 \\\\ \rm 1^2+1 \times 2+2^2 \\\\ 7\)

d)

\(m+n \\\\ 1+2 \\\\ 3\)

Hence, the equations C and D will give the odd number after the solution.

To learn more about the odd number refer;

https://brainly.com/question/24158168

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