CBSE · Class 6-12

Back to Quadratic Equations

Class 10 · Mathematics (Standard) · Unit 4: Quadratic Equations

Solving by Factorisation

Lesson 2 of 6

Rewrite

ax^2 + bx + c

as a product of two linear factors: split the middle term

b

as

m + n

with

mn = ac

. Then factor by grouping. E.g.

6x^2 + 11x + 3

:

18 = 9\cdot 2

,

9+2 = 11

; factors

(2x+3)(3x+1)

.

Standard Form and Roots

Completing the Square

All lessons in this unit