Home › UP Board Class 10 › Mathematics › Quadratic Equations › For ax² + bx + c = 0 to be a quadratic equation,…
For ax² + bx + c = 0 to be a quadratic equation, what condition must hold?
Aa > 0
Ba < 0
Ca = 1
Da ≠ 0
Answer & Solution
Correct answer: D. a ≠ 0
If a = 0 the x² term disappears and the equation becomes linear. The only requirement is a ≠ 0.
Related questions
The study of inequalities is described as useful in solving problems in science and:A firm needing at least 6 units and at most 10 would write that as a:Which sign makes a statement an inequality rather than an equation?Unless stated otherwise, inequalities in that chapter are solved over the set of:The set of all values of the variable that make an inequality true is called its:Solving 4x plus 3 less than 6x plus 7 gives:When x is a real number in that inequality, the solution set is written as:When x is an integer in that inequality, the largest solution is: