Question
Which of the following are quadratic equations?
$2\text{x}^2-\sqrt{3}\text{x}+9=0$
$2\text{x}^2-\sqrt{3}\text{x}+9=0$
✓
Answer
$2\text{x}^2-\sqrt{3}\text{x}+9=0$
$\because2\text{x}^2-\sqrt{3}\text{x}+9=0$ is a quadratic polynomial.
$\therefore$ it is a quadratic equation.
$\because2\text{x}^2-\sqrt{3}\text{x}+9=0$ is a quadratic polynomial.
$\therefore$ it is a quadratic equation.
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