Find the domain of the function. g(x) =3x/x^2-81 a. (-∞, ∞) b. (-∞, -9) (-9, 9) (9, ∞) c. (81, ∞) d. (-∞, 0) (0, ∞)

After being rearranged and simplified, which of the following equations could be solved using the quadratic formula? check all that apply. a. 9% + 3x2 = 14 + x-1 b. -x+ + 4x + 7 = -32-9 c. 5x + 4 = 3x4 - 2 d. 2x2 + x2 + x = 30

Enter the number of complex zeros for the polynomial function f(x) = x 4+ 5x² +6

How do i do this? i don’t understand