Ex 12.1, 3 - Chapter 12 Class 8 Exponents and Powers - Part 4

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  1. Chapter 12 Class 8 Exponents and Powers
  2. Serial order wise

Transcript

Ex 12.1, 3 Find the value of. (iii) (1/2)^(−2)+ (1/3)^(−2)+ (1/4)^(−2) (1/2)^(−2)+ (1/3)^(−2)+ (1/4)^(−2) = 1^(−2)/2^(−2) + 1^(−2)/3^(−2) + 1^(−2)/4^(−2) = 1/2^(−2) + 1/3^(−2) + 1/4^(−2) = 2^2 + 3^2 + 4^2 = 4 + 9 + 16 = 29 (1 to the power any number is 1)

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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.