Answer:
(A) x² +8
Explanation:
You want to select the quadratic binomial from the given list.
Quadratic
The term "quadratic" is used interchangeably with "degree 2" when referring to a polynomial's degree.
Binomial
A "binomial" is a 2-term polynomial. The prefixes mono-, bi-, tri- are used with -nomial to describe the number of terms as being 1, 2, or 3, respectively.
2-term polynomial of degree 2
The quadratic binomial in the list is ...
x² +8
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Additional comment
This is a vocabulary question. You are expected to be familiar with the meaning of these descriptive terms. The others on the list are ...
- 3x² +2x -8 — a quadratic trinomial
- x³ -3x² — a cubic binomial
- x +7 — a linear binomial