Two numbers are 10 units away in different directions from
their midpoint, m, on a number line. The product of the
numbers is -99.
Which equation can be used to find m, the midpoint of the
two numbers?
(m - 5)(m + 5) = 99
(m-10) (m + 10) = 99
m2 - 25 = -99
Om2 - 100 = -99