## Testing123guest one year ago @welshfella @texaschic101 plz help

1. Testing123guest

2. anonymous

Have you learnt the laws of exponents?

3. Testing123guest

a little but i am very bad at it

4. anonymous

When dividing you subtract exponents

5. anonymous
6. anonymous

$\frac{ a ^{n} }{ a^{m} }=a ^{n-m}$

7. Testing123guest

ya but i dont under stand how to do it when it is n a fraction form

8. anonymous

use my equation that i just wrote

9. anonymous

what is a in your example? Its the base number. I.e a

10. anonymous

n=7 m=3

11. Testing123guest

s do i add 7 and 3

12. Testing123guest

*so

13. anonymous

$\frac{ a ^{n} }{ a^{m} }=a ^{n-m}$

14. anonymous

what are we doing to the exponents on the RHS of the equation?

15. texaschic101

just plug your numbers into the formula

16. Testing123guest

i am not sure

17. texaschic101

you are subtracting

18. Testing123guest

7-3 so 4

19. Testing123guest

a

20. texaschic101

yes...a^4

21. Testing123guest

now can u check this one $3^{2} * 3^{5} * 3^{-3}$ is it 81 and what is a,b,c,d

22. Testing123guest

is it b

23. texaschic101

when you are multiplying exponents with the same base, you add the exponents

24. texaschic101

so add the exponents.......2 + 5 + (-3)

25. texaschic101