Class 10 Maths for Quadratic Equations of Chapter 4 Revision Notes


CBSE Class 10 Maths Chapter 4 – Quadratic Equations – Free PDF Download

Free PDF download of Class 10 Maths Chapter 4 – Quadratic Equations Revision Notes & Short Key-notes prepared by expert Mathematics teachers from latest edition of CBSE(NCERT) books.
You can also Download Maths NCERT Solutions Class 10 to help you to revise complete Syllabus and score more marks in your examinations.

 

CBSE Class 10 Maths Revision Notes Chapter 4 Quadratic Equations

1.Quadratic Equations
2. Solution by Factorisation
3. Solution by Completing the Square
4. Nature of Roots
1. The equation  ,   is the standard form of a quadratic equation, where a, b and c are real numbers.
 is known as Standard form or General form of a quadratic equation.
In other words, we can say that an equation of order (degree) 2 is called a quadratic equation.
2. A real number   is said to be a root of the quadratic equation  , . If  the zeroes of quadratic polynomial  and the roots of the the quadratic equation  are the same.
3. If we can factorise  into product of two linear factors,then the roots of the quadratic equation can be found by equating each factors to zero.
4. The roots of a quadratic equation  are given by provided that . It is called Quadratic formula.
5. A quadratic equation  has :
(a) Two distinct and real roots, if 
(b) Two equal and real roots, if 
(c) Two roots are not real, if 
6. A quadratic equation can also be solved by the method of completing the square.
(i) 
(ii) 
7. Discriminant of the quadratic equation  is given by .