Example 8 (ii) - Chapter 8 Class 8 Algebraic Expressions and Identities

Last updated at April 16, 2024 by

Example 8 - Chapter 9 Class 8 Algebraic Expressions and Identities - Part 2

 

Transcript

Example 8 Multiply (ii) (𝑥 – 𝑦) and (3𝑥 +5𝑦) (𝑥−𝑦)×(3𝑥+5𝑦) = 𝑥(3𝑥+5𝑦)−𝑦(3𝑥+5𝑦) = (𝑥×3𝑥)+(𝑥×5𝑦)−(𝑦×3𝑥)−(𝑦×5𝑦) = 3𝑥^2+5𝑥𝑦−3𝑦𝑥−5𝑦^2 = 3𝑥^2+5𝑥𝑦−3𝑥𝑦−5𝑦^2 = 𝟑𝒙^𝟐+𝟐𝒙𝒚−𝟓𝒚^𝟐

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.