6 jeeps are needed. the last jeep will fit 4 people because you cant logically cut a jeep in half to make it perfectly sized. In this case its 6 jeeps as your answer.
To complete the square we get the coefficient of x, divide it by 2 then square it. -3/4 divided by 2 = -3/8 and then squared it equals 9 / 64 answer is a