Quadratic Equations

This chapter introduces quadratic equations of the form $ax^2 + bx + c = 0$ and the methods to solve them: factorisation, completing the square, and the quadratic formula. It covers the discriminant and the nature of roots (real and distinct, real and equal, or no real roots), and a wide range of word problems that reduce to quadratic equations. It is a high-scoring, application-rich chapter important for both CBSE and State Board examinations.