The midpoint of is point p at (−16,6). if point a is at (−10,8), what are the coordinates of point b? (−42,20) (−22,4) (−13,7) (2,−5)

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.