Choose the expression that represents a quadratic expression. A/ 6x4 − 5x3 + 3x2 −7x − 8. . B/5x3 + 3x2 −7x − 8. . C/2x2 + 3x − 1. . D/3x − 1

Question

asked Sep 9, 2021 57.6k views

1 Answer

Dbgrman · Answer 1 · 2021-09-12T20:11:24+0000

Answer:C. 2x2 + 3x − 1 is quadratic

Explanation:

Quadratic expressions are polynomial expressions in which the highest power of the variable is 2.

Looking at option A, the highest power of the variable in the polynomial is 4. Therefore, it is not a quadratic expression.

Looking at option B, the highest power of the variable in the polynomial is 3. Therefore, it is not a quadratic expression.

Looking at option C, the highest power of the variable in the polynomial is 2. Therefore, it is a quadratic expression.

Looking at option D, the highest power of the variable in the polynomial is 1. Therefore, it is not a quadratic expression.