Which one of the following statements is true?

Hi,

1) False, why ?



2) True, why ?



3) False, I let you search ;)

4) We say that 2) was true, so.

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.