Question

HURRYYYYY

Which of the following is an example of a
quadratic expression?
2x - 5
x² + 3x - 6
x² - 4x² +7
+2
X
А

Answer 1

B is correct.

Explanation:

Quadratic Expression (Standard Form) is:

`\displaystyle \large{a {x}^(2) + bx + c}`

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.