Question

Find the value of X:

x^-2=1/16


4 and -4

only 4

16 and -16

only 16

Answer 1

@alakara_kibo
@Mathbreaker

Answer 2

The answer is 4 and -4. Alakara is wrong, see
you have
(1/x)^2 = 1/16
now 1/x = sqrt(1/16)
1/x = +/- (1/4)
now x = +/- 4
so it can be either 4 or -4