Question

Simplify 1/5^-4


-4/5

625

-625

-1/625

Answer 1

You're aware of laws of exponents by ANY chance?

Answer 2

http://gradeninemath.blogspot.in/2010/06/number-sense.html

for laws of exponents.

Answer 3

so it says that a^-n = 1/a^n.

u can apply conversely also.

a^n = 1/a^-n. u can try out the given sum now?

Answer 4

-625?

Answer 5

actually nope.

bcoz 1/5^-4 would be 5^4 which is 625.