Consider the quadratic equation 3x^2-6+2x. (a)What is the value of the discriminant? (b)What does the discriminant of the quadratic equation tell about the solutions to 3x^2-6+2x ? Thank you!

Consider u = {x|x is a negative real number}which is an empty set? o {x|x eu and x has a negative cube root}o {x|x eu and x has a negative square root}{x|x eu and x is equal to the product of a positive number and -1}{x|x eu and x is equal to the sum of one negative and one positive number?