Identity property

Factorisations of Class 8

An identity is an equality which is true for all values of the variable(s).

STANDARD IDENTITIES:

Identity 1 : (a + b)2 = a2 + 2ab + b2

Identity 2 : (a – b)2 = a2 – 2ab + b2

Identity 3 : (a + b) (a – b) = a2 – b2

Identity 4 : (x + a) (x + b) = x2 + (a + b) x + ab

Identity 5 : (a + b + c)2 = (a2 + b2 + c2) + 2(ab + bc + ca)

Identity 6 : (a + b – c)2 = (a2 + b2 + c2) + 2(ab – bc - ca)

Identity 7 : (a + b)3 = a3 + b3 + 3ab (a + b)

Identity 8: (a - b)3 = a3 – b3 – 3ab (a – b)

CBSE NCERT Solutions for Class 8 Maths

class 8 maths NCERT solutions Chapter 1: Rational Numbers

class 8 maths NCERT solutions Chapter 2: Linear Equations in One Variable

class 8 maths NCERT solutions Chapter 3: Understanding Quadrilaterals

class 8 maths NCERT solutions Chapter 4: Practical Geometry

class 8 maths NCERT solutions Chapter 5: Data Handling

class 8 maths NCERT solutions Chapter 6: Square and Square Roots

class 8 maths NCERT solutions Chapter 7: Cube and Cube Roots

class 8 maths NCERT solutions Chapter 8: Comparing Quantities

NCERT Class 8 Maths solution Chapter 9: Algebraic Expressions and Identities

class 8 maths NCERT solutions Chapter 10: Visualizing Solid Shapes

class 8 maths NCERT solutions Chapter 11: Mensuration

class 8 maths NCERT solutions Chapter 12: Exponents and Powers

class 8 maths NCERT solutions Chapter 13: Direct and Inverse Proportions

class 8 maths NCERT solutions Chapter 14: Factorization

class 8 maths NCERT solutions Chapter 15: Introduction to Graphs

class 8 maths NCERT solutions Chapter 16: Playing with Numbers

Notes,worksheet and solved question for Maths class 8

Check your marks in a chapter which you have complited in school from Physics Wallah chapter wise online test just click on the link given below

chapter wise online test for class 8 maths