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Ex 10.1, 7 (ii) - Chapter 10 Class 8 Exponents and Powers
Last updated at July 24, 2023 by Teachoo
Ex 10.1
Ex 10.1, 1 (i)
Ex 10.1, 1 (ii)
Ex 10.1, 1 (iii) Important
Ex 10.1, 2 (i)
Ex 10.1, 2 (ii) Important
Ex 10.1, 2 (iii)
Ex 10.1, 2 (iv) Important
Ex 10.1, 2 (v)
Ex 10.1, 3 (i)
Ex 10.1, 3 (ii) Important
Ex 10.1, 3 (iii) Important
Ex 10.1, 3 (iv)
Ex 10.1, 3 (v) Important
Ex 10.1, 4 (i) Important
Ex 10.1, 4 (ii)
Ex 10.1, 5 Important
Ex 10.1, 6 (i) Important
Ex 10.1, 6 (ii)
Ex 10.1, 7 (i) Important
Ex 10.1, 7 (ii) You are here
Transcript
Ex 10.1, 7 Simplify. (ii) (3^(−5 ) × 10^(−5 ) × 125)/(5^(−7 ) × 6^(−5) ) (3^(−5 )× 10^(−5 ) × 125)/(5^(−7 ) × 6^(−5) ) = 3^(−5) × 10^(−5) × 125 × 1/5^(−7) ×1/6^(−5) = 𝟏/𝟑^(𝟓 ) ×𝟏/〖𝟏𝟎〗^𝟓 × 𝟏𝟐𝟓 × 𝟓^𝟕 × 𝟔^𝟓 = 𝟔^𝟓/𝟑^𝟓 ×1/10^5 × 125 × 5^7 = (𝟔/𝟑)^𝟓×1/10^5 × 125 × 5^7 = (𝟐)^𝟓×1/10^5 × 𝟏𝟐𝟓 × 5^7 = 2^5 × 1/10^5 × 𝟓^𝟑 × 5^7 = 2^5×1/10^5 × 𝟓^(𝟑 + 𝟕) = 2^5×1/10^5 × 𝟓^𝟏𝟎 = (𝟐/𝟏𝟎)^𝟓×5^10 = (𝟏/𝟓)^𝟓×5^10 = 1^5/5^5 ×5^10 = 𝟏/𝟓^𝟓 × 𝟓^𝟏𝟎 = 5^10/5^5 = 5^(10 − 5) = 𝟓^𝟓
