Ex 2.5,2 - 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, 2 Evaluate the following products without multiplying directly: (ii) 95 96 95 96 = (100 5) (100 4) Using Identity (x + a) (x + b) = x2 + (a + b)x + ab, where x = 100 , a = 5, b = 4 , = (100)2 + ( 5 4) 100 + ( 5) ( 4) = 10000 + ( 9)(100) + 20 = 10000 900 + 20 = 9120

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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.