The correct expression that represents a quadratic expression is: 12x² + 8x - 1.
What is a quadratic equation?
A quadratic equation is an algebraic expression that involves numbers and variables choosing the second degree of x.
- The common standard form of a quadratic equation takes the form: ax² + bx + c
Therefore, we can conclude that the correct quadratic equation from the options is 12x² + 8x - 1.
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