Ex 12.2, 6 - Chapter 12 Class 7 Algebraic Expressions - Part 2

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Ex 12.2, 6 - Chapter 12 Class 7 Algebraic Expressions - Part 3

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

Transcript

Ex 12.2, 6 (b) From the sum of 4 + 3x and 5 – 4x + 2x2, subtract the sum of 3x2 – 5x and –x2 + 2x + 5. Sum of (4 + 3x) and (5 − 4x+ 2x2) is given by Sum of (3x2 − 5x) and (−x2 + 2x + 5) is given by Subtracting (2x2 − 3x + 5) from (9 − x + 2x2) Answer is 4 + 2x i.e. 2x + 4

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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.