Whats the answer :))

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions.a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10

Find the zeros of each function. f(x) = 6x^2 - 7x - 20