CBSE · Class 10 · Mathematics · Quadratic EquationsFor the quadratic equation $ax^2 + bx + c = 0$, the discriminant $D$ is given by:
Step-by-Step Solution
The discriminant of a quadratic equation $ax^2 + bx + c = 0$ is defined as $D = b^2 - 4ac$.
Detailed Options Breakdown
Option : $b^2 - 4ac$ (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 1: $b^2 + 4ac$
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Quadratic Equations.
Option 2: $b - 4ac$
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Quadratic Equations.
Option 3: $\sqrt{b^2 - 4ac}$
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Quadratic Equations.
💡 Study Guide: This question tests core syllabus concepts from Quadratic Equations. For formulas, key summaries, and mock exam reference guides, read the full Quadratic Equations Revision Notes.