Class 10 · Chapter 4 · Algebra

Quadratic Equations

Equations with a squared term, and how to read their roots before finding them.

Source: NCERT Mathematics, Class 10

1. 4.1What Makes an Equation QuadraticAttention · Look for the squared term that survives after simplifying.8 min
2. 4.2Factorisation: Split the Middle TermAttention · Look at the product a × c, not at c alone.12 min
3. 4.3The Quadratic FormulaAttention · Look at the 2a: it divides the whole numerator, not just the root.10 min
4. 4.4The Discriminant and the Nature of RootsAttention · Look at the sign of D, not the size of any one part.10 min