Class 8 Maths Chapter 9 Introduction | Algebraic Expressions & Identities (বীজগণিতীয় ৰাশি)

📘 Class 8 Mathematics – Chapter 9: Algebraic Expressions and Identities (বীজগণিতীয় ৰাশি আৰু অভেদসমূহ) – Introduction | Ospin Academy

Hello dear students, welcome to Ospin Academy!

I’m Nasir, your mathematics teacher, and in this video, we are going to begin Chapter 9 – Algebraic Expressions and Identities (বীজগণিতীয় ৰাশি আৰু অভেদসমূহ) from the Class 8 SCERT Mathematics textbook.

In this Introduction Class, I’ll walk you through the basics of algebraic expressions, how to form them, their types, addition, subtraction, multiplication, and how to use some important identities in real-life problem solving.

This chapter is very important not just for exams, but also as the foundation for higher classes. Don’t worry, I’ll make every formula and example super easy and practical for you.

🧠 What You’ll Learn in This Chapter:

✔️ Formation of Algebraic Expressions
✔️ Terms, factors, and coefficients
✔️ Monomial, Binomial, Trinomial & Polynomial
✔️ Addition & Subtraction of expressions
✔️ Multiplication of expressions (monomial × monomial, monomial × binomial, binomial × binomial)
✔️ Standard Identities and their applications
✔️ Solving real-life word problems with algebra

🎯 What’s Covered in This Video:

✅ What is an algebraic expression?
✅ Different types of expressions explained with examples
✅ Rules of addition and multiplication of expressions
✅ Step-by-step introduction to identities
✅ Why this chapter is important in exams and higher maths

🔍 Chapter Exercises:

Exercise 9.1 – Multiplication of algebraic expressions

Exercise 9.2 – Standard identities and applications

📝 Useful Formulas & Identities Covered:

1. (a + b)² = a² + 2ab + b²
2. (a – b)² = a² – 2ab + b²
3. (a + b)(a – b) = a² – b²
4. (x + a)(x + b) = x² + (a + b)x + ab

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🔖 Tags

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🔗 Chapter QR Codes:
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🎉 Let’s dive into this important chapter and build a strong base of algebra, only on Ospin Academy with your teacher Nasir.
Happy Learning, Students! 📚✨