The roots of the equation x² + 2x + 4 = 0 are A) rational and equal
B) rational and unequal
C) imaginary and unequal
D) real, rational, and unequal

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles

What is the value of the discrimination for the quadratic equation 0=×2+2+×2

Acontainer holds 0.7 liters of oil and vinegar. 3/4 of the mixture is vinegar. how many liters of oil are in the container? express your answer as both a fraction and a decimal.