Ex 2.5,10 - Chapter 2 Class 9 Polynomials - Part 2

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  1. Chapter 2 Class 9 Polynomials (Term 2)
  2. Serial order wise

Transcript

Ex 2.5, 10 Factorise each of the following: (ii) 64m3 – 343n3 64m3 – 343n3 = (4m)3 – (7n)3 From Ex 2.5,9 we know x3 – y3 = (x - y) (x2 + xy + y2) where x = 4m , y = 7n = (4m – 7n) [ (4m)2 + (7n)2 + (4m) (7n)] = (4m – 7n) [ 16m2 + 49n2 + 28mn]

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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.