What are the zeros of the polynomial function
f(x)= x^3-2x^2-8x
a -4,0,2
b -4,2
c -2,0,4
d -2,4

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

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39

Which word in the sentence below is an interrogative pronoun? who is picking us up from school? whousisfrom