Quadratic Equations | Class 10 | Practice Set 2.3

Quadratic Equations | Class 10 | Practice Set 2.3

In this article you will learn about quadratic equations practice set 2.3. Simple solutions of the equations is available here.

The PDF file embedded at the end of this article has simple solutions of all the problems in practice set 2.3.

Also read : Linear Equations in Two Variables | Practice Set 1.5

In this practice set the quadratic equations are solved using completing the square method. In this method first you should check the coefficient of ‘x2’ in the given quadratic equation. If it is ‘1’ then it is good but if it is not ‘1’ then you should make it zero by dividing whole equation with the coefficient of ‘x2’.

Then afterwards equate the coefficient of ‘x’ with ‘2a’. After solving this you will get the value of ‘a’ then make the square of both the sides and you will get the value of ‘a2’.

Also read : Linear Equations in Two Variables | Practice Set 1.4

Then write the given quadratic equation as it is and write the value of ‘a2’ with both plus and minus signs in between the terms of ‘x’ and the constant term.

Then solve the equation by performing appropriate mathematical operations and you get the solution of the given quadratic equation.

Practice Set 2.3

Solve the following quadratic equations by completing the square method.
(1) x2 + x – 20 = 0 (2) x2 + 2 x – 5 = 0 (3) m2 – 5 m = -3 (4) 9y2 – 12 y + 2 = 0 (5) 2y2 + 9y + 10 = 0 (6) 5×2 = 4x +7

Practice-Set-2.3