The midpoint of \overline{\text{AB}} AB
is M(-2, -1)M(−2,−1). If the coordinates of AA are (-7, 2)(−7,2), what are the coordinates of BB?

Here, feel free to ask if there are any questions

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.