# Algebraic Expressions and Identities Formulas for Class 8 Maths Chapter 9

## Algebraic Expressions and Identities Formulas for Class 8 Maths Chapter 9

Are you looking for Algebraic Expressions and Identities formulas or important points that are required to understand Algebraic Expressions and Identities for class 8 maths Chapter 9? You are the right place to get all information about Algebraic Expressions and Identities Class 8 maths chapters 9. Algebraic Expressions and Identities formulas play a vital role in preparing you for the class 8 exam as well as higher studies. Algebraic Expressions and Identities formulas are very helpful for better scores in the exam.  Check Algebraic Expressions and Identities formulas according to class 8:

• (a + b)2=a2 + 2ab + b2
• (a−b)2=a2−2ab + b2
• (a + b)(a – b)=a2 – b2
• (x + a)(x + b)=x2 + (a + b)x + ab
• (x + a)(x – b)=x2 + (a – b)x – ab
• (x – a)(x + b)=x2 + (b – a)x – ab
• (x – a)(x – b)=x2 – (a + b)x + ab
• (a + b)3=a3 + b3 + 3ab(a + b)
• (a – b)3=a3 – b3 – 3ab(a – b)
• (x + y + z)2=x2 + y2 + z2 + 2xy + 2yz + 2xz
• (x + y – z)2=x2 + y2 + z2 + 2xy – 2yz – 2xz
• (x – y + z)2=x2 + y2 + z2 – 2xy – 2yz + 2xz
• (x – y – z)2=x2 + y2 + z2 – 2xy + 2yz – 2xz
• x3 + y3 + z3 – 3xyz=(x + y + z)(x2 + y2 + z2 – xy – yz−xz)
• (x + a)(x + b)(x + c)=x3 + (a + b + c)x2 + (ab + bc + ca)x + abc
• x3 + y3=(x + y)(x2 – xy + y2)
• x3 – y3=(x – y)(x2 + xy + y2)
• (a + b)4 = a4 + 4a3b + 6a2b2 + 4ab3 + b4)
• (a – b)4 = a4 – 4a3b + 6a2b2 – 4ab3 + b4)
• a4 – b4 = (a – b)(a + b)(a2 + b2)
• a5 – b5 = (a – b)(a4 + a3b + a2b2 + ab3 + b4)

#### Summary of Algebraic Expressions and Identities

We have shared very important formulas for Algebraic Expressions and Identities which is helps to score in the class 8 exams. If you have any questions and doubts related too Algebraic Expressions and Identities please let me know through comment or mail as well as social media. When you understand the formulas behind each Algebraic Expressions and Identities topics then it would be easier to solve the most complex problems related to Algebraic Expressions and Identities too.

Chapter-wise Maths Formulas for Class 8

### NCERT Solutions Class 8 Maths By Chapters

• Chapter 1 – Rational Numbers
• Chapter 2 – Linear Equations in One Variable
• Chapter 3 – Understanding Quadrilaterals
• Chapter 4 – Practical Geometry
• Chapter 5 – Data Handling
• Chapter 6 – Squares and Square Roots
• Chapter 7 – Cubes and Cube Roots
• Chapter 8 – Comparing Quantities
• Chapter 9 – Algebraic Expressions and Identities
• Chapter 10 – Visualising Solid Shapes
• Chapter 11 – Mensuration
• Chapter 12 – Exponents and Powers
• Chapter 13 – Direct and Inverse Proportions
• Chapter 14 – Factorisation
• Chapter 15 – Introduction to Graphs
• Chapter 16 – Playing with Numbers