Question

Which of the following is the standard form of a quadratic equation?

• A. $a{x}^2+c=0$; $a\ne 0$; a $\&$ c are real
• B. $a{x}^2+bx+c=0;a\ge 0$; a, b, c are real
• C. $a{x}^2+bx+c=0$; a $\ne$ 0; a, b, c are real
• D. $a{x}^2+bx+c=0;a\le 0$; a, b, c are real.

Answer 1

The correct option is C

$a{x}^2+bx+c=0$; a $\ne$ 0; a, b, c are real

The standard form of a quadratic equation is $a{x}^2+bx+c=0$.
For $a{x}^2+bx+c=0$ to be a quadratic equation,
$a\ne 0$; a, b and c are real.