Question

Which of the following is an example of a quadratic equation?

Answer 1

Answer: OPTION C.

Step-by-step explanation:

 The standard form of a Quadratic equation is:

 $ax^2 + bx + c = 0$

Where "a", "b", and "c" are numerical coefficients ($a\neq 0$)

The term $ax^2$ is the Quadratic term,.

The term  $bx$ is the Linear term.

The term  $c$ is the Constant term.

  A Quadratic equation whose Linear term is not present, is called a "Pure quadratic equation", and can have the following form:

$ax^2+c=0$

Based on this, we can determine that the equation shown in Option C is a Pure quadratic equation, because it has a Quadratic term and a Constant term:

$x^2=125$

It can be written as:

$x^2-125=0$

Answer 2

Answer: X² = 125

Step-by-step explanation: The equation X² = 125 is called a quadratic equation because we have a squared term as our highest power.