## Here you will learn Practice set 2.2 of 10th Maths 1 Quadratic Equations by using Factorization method by Mahesh Prajapati.

Last year you have studied the methods to find the factors of quadratic polynomials like x^{2} – 4x – 5,

2m^{2 }– 5m, a^{2} – 25. Try the following activity and revise the same.

## Click Here for basic of Factorization

## Solutions of a quadratic equation by factorisation

By substituting arbitrary values for the variable and deciding the roots of quadratic equation is a time consuming process. Let us learn to use factorisation method to find the roots of the given quadratic equation.

## Click Here for Practice Set 2.1

## Practice Set 2.2

- Solve the following quadratic equations by factorisation.

(1) x^{2}– 15 x + 54 = 0 (2) x^{2}+ x – 20 = 0 (3) 2y^{2}+ 27 y + 13 = 0

(4) 5m^{2}= 22 m + 15 (5) 2x^{2}– 2 x +1/2 = 0 (6) 6x -2/x = 1

(8) 3x^{2} – 2 6 x + 2 = 0 (9) 2m (m – 24) = 50

(10) 25m^{2 }= 9 (11) 7m^{2} = 21m (12) m^{2} – 11 = 0