How mutch is 2^ -2?

Question

Its maybe a stupid question but how mutch is is 2^ -2?
How to begin -2*-2? taht will be 4 but thats wrong the correct anwser must be 0.25 right.

Answer 1

0.25

Answer 2

Use laws of exponents. 2^-2 is the same as (1/2)^2 since if you look at it like 2^(-1)(2), then 2^(-1). Anytime a number is raised to negative 1, it's just the reciprocal (multiplicative inverse) of the number. And if you multiply 1/2 by 1/2 as in (1/2)^2, then you get 1/4.

-2^(-2) will be (-1/2)^2, and -1/2 times -1/2 is also equal to 1/4.

Answer 3

1/4

Answer 4

2^-2 = 1/2^2 = 1/4 = 0.25

Answer 5

if a number has a negative power, you have to write it in it's inverse form to make the power positive..

2^-2 = inverse form = 1/2^2

that would be 1/4

Answer 6

it equals 1/(2^2).
In general; x^(-n) = 1/(x^n)
If in your future you have these questions, then go to an excell spreadsheet and see your self. These experimentation's are as ligament at doing a laboratory experiment in chemistry.