Ex 8.4, 2 (ii) - Chapter 8 Class 8 Algebraic Expressions and Identities
Last updated at April 16, 2024 by Teachoo
Multiplication of Polynoimals by Polynomials
Multiplying Binomial by a Binomial
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Chapter 8 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
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Multiplication of Polynoimals by Polynomials
- Algebra Identities - Identity I
- Algebra Identities - Identity II
- Algebra Identities - Identity III
- Algebra Identities - Identity IV
Transcript
Ex 8.4, 2 Find the product. (ii) (𝑥+7𝑦) (7𝑥−𝑦) (𝑥+7𝑦) (7𝑥−𝑦) = 𝑥(7𝑥−𝑦)+7𝑦(7𝑥−𝑦) = (𝒙 × 𝟕𝒙)−(𝒙 × 𝒚)+(𝟕𝒚 × 𝟕𝒙)−(𝟕𝒚 × 𝒚) = 7𝑥^2−𝑥𝑦+49𝑦𝑥−7𝑦^2 = 𝟕𝒙^𝟐+𝟒𝟖𝒙𝒚−𝟕𝒚^𝟐
