1. Chapter 2 Class 9 Polynomials
  2. Serial order wise
  3. Ex 2.4
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Ex 2.4, 5 (i) - Chapter 2 Class 9 Polynomials

Last updated at Dec. 13, 2024 by Teachoo

 

 

Transcript

Ex 2.4, 5 Factorise: 4x2 + 9y2 + 16z2 + 12xy – 24yz – 16xz 4x2 + 9y2 + 16z2 + 12xy – 24yz – 16xz = 22 x2 + 32 y2 + 42 z2 + 12xy – 24yz – 16xz = (2x)2 + (3y)2 + (4z)2 + 12xy – 24yz – 16xz = (2x)2 + (3y)2 + (–4z)2 + 12xy – 24yz – 16xz = (2x)2 + (3y)2 + (–4z)2 + 2(2x)(3y) + 2(3y) (–4z) + 2(2x) (–4z) Using (a + b + c)2 = a2 + b2 + c2 + 2ab + 2bc + 2ac Putting a = 2x, b= 3y , c = –4z = (2x + 3y – 4z)2 = (2x + 3y – 4z) (2x + 3y – 4z)
  1. Chapter 2 Class 9 Polynomials
  2. Serial order wise

    3. Ex 2.4

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Examples →
Chapter 2 Class 9 Polynomials
Serial order wise

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Davneet Singh

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 and Computer Science at Teachoo