What is the difference of the rational expressions below

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

Including 6% sales tax, an inn charges $135.68 per night. find the inns nightly cost

If we pull out the middle player of team a and the fourth player of the team b. what will be the force of team a and team b? what is their sum of forces