With the given roots, a quadratic function has an equation y(x) = a*(x-(-1))*(x-1/4), where "a" is an arbitrary real number. Since you want the coefficients from the list, take a = 4 or -4. You will get then y(x) = 4*(x+1)*(x-1/4) = (x+1)*(4x-1) = 4x^2 + 4x - x - 1 = 4x^2 + 3x - 1, or y(x) = -4*(x+1)*(x-1/4) = -(x+1)*(4x-1) = -4x^2 - 4x + x + 1 = -4x^2 - 3x + 1. These two forms give you two quadratic functions that satisfy the imposed conditions.