# RBSE Class 8 Maths Notes Chapter 12 Exponents and Powers

These comprehensive RBSE Class 8 Maths Notes Chapter 12 Exponents and Powers will give a brief overview of all the concepts.

Rajasthan Board RBSE Solutions for Class 8 Maths in Hindi Medium & English Medium are part of RBSE Solutions for Class 8. Students can also read RBSE Class 8 Maths Important Questions for exam preparation. Students can also go through RBSE Class 8 Maths Notes to understand and remember the concepts easily. Practicing the class 8 maths chapter 6 try these solutions will help students analyse their level of preparation.

## RBSE Class 8 Maths Chapter 12 Notes Exponents and Powers

→ When we write 36, 23 it means 36 = 3 × 3 × 3 × 3 × 3 × 3 and 23 = 2 × 2 × 2.
We read 36 as 3 raised to the power 6.
It may be 3-6 also.
Here, 6 and - 6 are called ‘Exponents’.
We express very small or large numbers in standard form (i.e. scientific notation). → Laws of Exponents:

• am x an = am+n
• $$\frac{a^{m}}{a^{n}}$$ = am-n
• (am)n = amn
• am × bm = (ab)m
• $$\frac{a^{m}}{b^{m}}=\left(\frac{a}{b}\right)^{m}$$
• a-m = $$\frac{1}{a^{m}}$$; for any non-zero integer.
• a° = 1 (a ≠ 0)
• (- 1)p = 1 for any even integer p and (- 1)p = - 1 for any odd integer p.

→ A number, is called in standard form if it is expressed in K × 10n, n = an integer. Last Updated on June 1, 2022, 2:51 p.m.
by
Published June 1, 2022