Question

Simplify the expression:

Answer 1

\[144 ^{-1/2}\]

Answer 2

take the square root
take the reciprocal

Answer 3

yeah

Answer 4

so 12?

Answer 5

\[144^{-1/2}=(12^2)^{-1/2}\]

Answer 6

I can only choose from 1/72, -72, 1/12, -12

Answer 7

1/12, cause (12^2)^(-1/2)=(12)^-1=1/12

Answer 8

as mukushla said above