Ex 9.5, 6 - Chapter 9 Class 8 Algebraic Expressions and Identities - Part 7

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  1. Chapter 9 Class 8 Algebraic Expressions and Identities
  2. Serial order wise

Transcript

Ex 9.5, 6 Using identities, evaluate. (vi) 297 × 303 297 × 303 = (300−3)×(300+3) (𝑎−𝑏)(𝑎+𝑏)=𝑎^2−𝑏^2 Putting 𝑎 = 300 & 𝑏 = 3 = (300)^2−(3)^2 = 90000−9 = 𝟖𝟗𝟗𝟗𝟏

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.