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Ex 12.1, 2 (iv) - Chapter 12 Class 8 Exponents and Powers
Last updated at March 22, 2023 by Teachoo
Ex 12.1
Ex 12.1, 1 (i)
Ex 12.1, 1 (ii)
Ex 12.1, 1 (iii) Important
Ex 12.1, 2 (i)
Ex 12.1, 2 (ii) Important
Ex 12.1, 2 (iii)
Ex 12.1, 2 (iv) Important You are here
Ex 12.1, 2 (v)
Ex 12.1, 3 (i)
Ex 12.1, 3 (ii) Important
Ex 12.1, 3 (iii) Important
Ex 12.1, 3 (iv)
Ex 12.1, 3 (v) Important
Ex 12.1, 4 (i) Important
Ex 12.1, 4 (ii)
Ex 12.1, 5 Important
Ex 12.1, 6 (i) Important
Ex 12.1, 6 (ii)
Ex 12.1, 7 (i) Important
Ex 12.1, 7 (ii)
Transcript
Ex 12.1, 2 Simplify and express the result in power notation with positive exponent. (iv) 〖(3〗^(−7)÷ 3^(−10)) × 3^(−5) 〖(3〗^(−7)÷ 3^(−10)) × 3^(−5) = (3^(−7)/3^(−10) )×3^(−5) = (3^(−7−(−10) ) )×3^(−5) = (3^(−7 + 10) )×3^(−5) = 3^3×3^(−5) = 3^(3 + (−5) ) = 3^(3− 5 ) (𝑈𝑠𝑖𝑛𝑔 𝑎^𝑚/𝑏^𝑛 =𝑎^(𝑚 − 𝑛) ) (𝑈𝑠𝑖𝑛𝑔 𝑎^𝑚×𝑎^𝑛=𝑎^(𝑚 + 𝑛) ) = 3^(−2) = 𝟏/𝟑^𝟐
