Ex 9.4, 1 (iii) - Chapter 9 Class 8 Algebraic Expressions and Identities
Last updated at Dec. 24, 2018 by Teachoo
Transcript
Ex 9.4, 1 Multiply the binomials. (iii) (2.5๐ โ 0.5๐) and (2.5๐ + 0.5๐) (2.5๐ โ 0.5๐)(2.5๐ + 0.5๐) = 2.5๐(2.5๐+0.5๐)โ0.5๐(2.5๐+0.5๐) = (2.5๐ร2.5๐)+(2.5๐ร0.5๐)โ(0.5๐ร2.5๐)โ(0.5๐ร0.5๐) = (25๐/10ร25๐/10)+(25๐/10ร5๐/10)โ(5๐/10ร25๐/10)โ(5๐/10ร5๐๐/10) = 625/100ร(๐ร๐)+125/100 (๐ร๐)โ(125/100)ร(๐ร๐)โ(25/100)ร(๐ ร ๐) = 6.25๐^2+1.25๐๐โ1.25๐๐โ0.25๐^2 = ๐.๐๐๐^๐โ๐.๐๐๐^๐
Multiplication of Polynoimals by Polynomials
Multiplying Binomial by a Binomial
Multiplying Binomial by a Trinomial
Ex 9.4, 1 (i)
Ex 9.4, 1 (ii)
Ex 9.4, 1 (iv) Important
Ex 9.4, 1 (iii) Important You are here
Ex 9.4, 2 (i)
Ex 9.4, 2 (ii)
Example 8
Example 9 Important
Ex 9.4, 2 (iii)
Ex 9.4, 2 (iv)
Ex 9.4, 1 (v) Important
Ex 9.4, 1 (vi) Important
Ex 9.4, 3 (iii)
Ex 9.4, 3 (i)
Ex 9.4, 3 (ii)
Ex 9.4, 3 (vi)
Ex 9.4, 3 (viii)
Example 10 Important
Ex 9.4, 3 (iv) Important
Ex 9.4, 3 (v) Important
Ex 9.4, 3 (vii) Important
Chapter 9 Class 8 Algebraic Expressions and Identities
Concept wise
- Basic Definitions
- Addition and Subtraction of Algebraic Expressions
- Multiplication of Monomials
- Multiplication of Monomials by Binomials and Trinomials
- Multiplication of Polynoimals by Polynomials
- Algebra Identities - Identity I
- Algebra Identities - Identity II
- Algebra Identities - Identity III
- Algebra Identities - Identity IV
About the Author
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.