Answer:
B is correct.
Step-by-step explanation:
Quadratic Expression (Standard Form) is:

To say it simply, the expression must have 2 as the highest degree.
This means that if there are any higher or lower degrees than 2 then they are not quadratic expression.
A choice is not quadratic expression because it has 1 as the highest degree.
B choice is correct because 2 is the highest degree.
C choice is wrong because 3 is the highest degree.
D choice is wrong because it is not a polynomial.
Therefore, B is correct.
Ok so basically what u need to do is
We just plug in, simplify, and solve.
x/2 + 3x - y
8/2 + 3(8) - 2
4 + 24 - 2
28 - 2
26
Option C should be your answer.
It would be helpful if you could post a photo so I can look at the context. Thank you
Answer:
MN line
Step-by-step explanation: