Example 5 - Chapter 10 Class 8 Exponents and Powers

Last updated at August 13, 2026 by

Example 5 - Find m so that (-3)^m + 1 x (-3)^5 = (-3)^7 - Chapter 12 C

Remove Ads
Teachoo · Class 8 Explore Class 8

Transcript

Example 5 Find m so that 〖(−3)〗^(𝑚+1) × 〖(−3)〗^5 = 〖(−3)〗^7 〖(−3)〗^(𝑚+1) × 〖(−3)〗^5 = 〖(−3)〗^7 〖(−3)〗^(𝑚 + 1 + 5) = 〖(−3)〗^7 〖(−3)〗^(𝑚 + 6) = 〖(−3)〗^7 Comparing powers m + 6 = 7 m = 7 − 6 m = 1 (Using 𝑎^𝑚×𝑎^𝑛=𝑎^(𝑚 + 𝑛))

Davneet Singh's photo - Co-founder, Teachoo

Made by

Davneet Singh

Davneet Singh is an IIT Kanpur graduate and has been teaching for 16+ years. At Teachoo, he breaks down Maths, Science and Computer Science into simple steps so students understand concepts deeply and score with confidence.

Many students prefer Teachoo Black for a smooth, ad-free learning experience.