What is the value of the discriminant for the quadratic equation –3 = –x2 + 2x?

discriminant = b2 – 4ac

–8
4
8
16

What is the exact volume of the cylinder (radius 13 in., height 30 in.)

Twenty-five percent of the customers entering a grocery store between 5 p.m. and 7 p.m. use an express checkout. consider five randomly selected customers, and let x denote the number among the five who use the express checkout.

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0