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 x2 – 4x – 5,
2m2 – 5m, a2 – 25. Try the following activity and revise the same.
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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.
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Practice Set 2.2
- Solve the following quadratic equations by factorisation.
(1) x2 – 15 x + 54 = 0 (2) x2 + x – 20 = 0 (3) 2y2 + 27 y + 13 = 0
(4) 5m2 = 22 m + 15 (5) 2x2 – 2 x +1/2 = 0 (6) 6x -2/x = 1

(8) 3x2 – 2 6 x + 2 = 0 (9) 2m (m – 24) = 50
(10) 25m2 = 9 (11) 7m2 = 21m (12) m2 – 11 = 0
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