Over the period of a year, Sam's net worth increased. Which of the following could be true?
a. Sam's assets and liabilities decreased by the same amount
b. Sam's assets and liabilities increased by the same amount.
c. Sam's assets increased by more than his liabilities.
d. Sam's assets decreased by more than his liabilities.

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.