Here’s a challenge I’ve been stuck on for a while, is anyone up to try to figure it out for me? There is a specific 8-digit code that has to be the exact numbers in the right order; any random 8-digit number will not work.

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.