What is the distance between the points (5, 6) and (-4, -6) in the xy-plane? a. 10 b. 15 c. 12 d. 9

How many can you pick?

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.