A school has 4 different after-school activities planned in the fall. Aaron has time to participate in 2 of these activities. How many different pairs of after-school activities can Aaron choose from the available activities?

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.

She sould do something that would push her confidents

2m + 2i'm not in college but i just simplified the i don't know if it's supposed to be more complicated than