Unlock the secrets of Quadratic Equations through our expertly crafted collection of 25 solved examples designed specifically for JEE Main, JEE Advanced, Mathematical Olympiads, and board examinations. From mastering advanced problem-solving techniques to understanding the elegant relationships between coefficients and roots, this comprehensive guide takes you from foundational concepts to competition-level applications. Each example is meticulously solved, covering crucial topics like parametric equations, transformations of equations, properties of roots using discriminant, and advanced applications of Vieta's formulas. Whether you're analyzing the conditions for nature of roots, solving problems involving complex roots, working with equations in different forms, or tackling Olympiad-level questions on quadratic inequalities, our step-by-step solutions develop both your analytical thinking and computational skills. Perfect for ambitious students aiming for top ranks in JEE and Mathematical Olympiads, these carefully selected examples progress from standard board exam questions to challenging problems that test your mathematical reasoning.