Ex 12.2, 2 - Chapter 12 Class 7 Algebraic Expressions - Part 9

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  1. Chapter 12 Class 7 Algebraic Expressions
  2. Serial order wise

Transcript

Ex 12.2, 2 Add: (ix) ab – 4a, 4b – ab, 4a – 4b (ab − 4a) + (4b − ab) + (4a − 4b) = ab − 4a + 4b − ab + 4a − 4b = −4a + 4a + 4b − 4b + ab − ab = a (−4 + 4) + b (4 − 4) + ab (1 − 1) = a (0) + b (0) + ab (0) = 0 + 0 + 0 = 0

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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.