Example 7 (ii) - Chapter 10 Class 8 Exponents and Powers

Last updated at April 16, 2024 by

Example 7 - Chapter 12 Class 8 Exponents and Powers - Part 2

Example 7 - Chapter 12 Class 8 Exponents and Powers - Part 3

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Transcript

Example 7 Simplify (ii) (5/8)^(−7)× (8/5)^(−5) (5/8)^(−7)× (8/5)^(−5) = 5^(−7)/8^(−7) × 8^(−5)/8^(−5) = 5^(−7)/5^(−5) × 8^(−5)/8^(−7) = 5^(−7 − (−5))×8^(−5 − (−7)) = 5^(−7 + 5)×8^(−5 + 7) = 5^(−2)×8^2 = 1/5^2 ×8^2 (𝑈𝑠𝑖𝑛𝑔 (𝑎/𝑏)^𝑚=𝑎^𝑚/𝑏^𝑚 ) (𝑈𝑠𝑖𝑛𝑔 𝑎^𝑚/𝑎^𝑛 =𝑎^(𝑚 − 𝑛) ) = (8 × 8)/(5 × 5) = 𝟔𝟒/𝟐𝟓

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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