Question

The condition for $p{x}^2+qx+r=0$ to be pure quadratic is:

• A. $p=0$
• B. $q=0$
• C. $r=0$
• D. $p=q=0$

Answer 1

The correct option is B $q=0$

A quadratic equation in which the term containing x raised to the power of 1 is not present is called a pure quadratic equation. In other words, ax^2 + c = 0 is a pure quadratic equation.

$\therefore q=0$