Antonia is factoring the polynomial, which has four terms. 21x^3-63x^2+15x-45,3[7x ^3-21x^2+5x-15], 3[7x^2(x-3)+5(x-3)]21x^2(x-3) b. 36x^2(x-3) c. 3(7x^2+5)(x-3) d. 3(12x^2+5)(x-3)

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. 4x^2 + 20x + 25 = 0

In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2

36x2 + 49y2 = 1,764 the foci are located at: (-√13, 0) and (√13,0) (0, -√13) and (0,√13) (-1, 0) and (1, 0)edit: the answer is (- the square root of 13, 0) and (the square root of 13, 0)