Example 15 - Chapter 2 Class 9 Polynomials

Last updated at Dec. 13, 2024 by

Example 15 - Expand (4a – 2b – 3c)2 - Chapter 2 Class 9 - Examples - Examples

Remove Ads

Transcript

Example 15 Expand (4a – 2b – 3c)2. (4a – 2b – 3c)2 = (4a + (–2b) + (–3c)) 2 Using (x + y + z)2 = x2 + y2 + z2 + 2xy + 2yz + 2zx Putting x = 4a, y = -2b , z = -3c = (4a)2 + (–2b)2 + (–3c)2 + 2(4a)(–2b) + 2(–2b)(–3c) + 2(–3c)(4a) = 16a2 + 4b2 + 9c2 – 16ab + 12bc – 24ac

Davneet Singh's photo - Co-founder, Teachoo

Made by

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