Can someone verify that the sign would be a negative or positive?

(9m)^-2 =
-81m is what I came up with.

Question

Can someone verify that the sign would be a negative or positive?

(9m)^-2 =
-81m is what I came up with.

anonymous · Answer

Hi Satellite :)

anonymous · Answer

take the reciprocal and square it, do not make it negative
hello

anonymous · Answer

so it's 81m

anonymous · Answer

math is weird but not that weird
if it is supposed to be negative you would see a big fat minus sign out front

anonymous · Answer

well, i am trying to get the hang of the signs ...doing my best lol

anonymous · Answer

$$b^{-n}=\frac{1}{b^n}$$ so 
$$(9m)^{-2}=\frac{1}{(9m)^2}$$

anonymous · Answer

wow, way off. lol

anonymous · Answer

the minus sign in the exponent does not mean make it negative
the minus sign in the exponent means take the reciprocal

anonymous · Answer

so for example 
$$3^{-2}=\frac{1}{9}$$

anonymous · Answer

so its 1/(9m)^2

anonymous · Answer

says simplify
is that simplified?

anonymous · Answer

you could write 
$$\frac{1}{81m^2}$$if you like