Example 18 - Factorize: (i) 49a2 + 70ab + 25b2 (ii) 25/9 - Identity I - IV

 

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

Transcript

Example 18 Factorize: 49a2 + 70ab + 25b2 49a2 + 70ab + 25b2 = 72 a2 + 70ab + 52 b2 = (7a)2 + 70ab + (5b)2 = (7a)2 + (5b)2 + 2(7a) (5b) Using Identity (x + y)2 = x2 + y2 + 2xy where x = 7a and y = 5b = (7a + 5b)2 = (7a + 5b) (7a + 5b)

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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.