If b^2 - 4ac < 0, then the roots of the equation ax^2 +bx +c =0 must be?

The equation respenting the left table is

Which of the following is a solution of z^6 = 64i? 2(cos105° + isin105°) 2(cos120° + isin120°) 2(cos135° + isin135°) 8(cos15° + isin15°)

The median for the given set of six ordered data values is 29.5 9 12 25 __ 41 48 what is the missing value?