Final answer:
The complete expression for the polynomial function is f(x) = ax^64 + bx^3 + cx^2 + ..., and its solutions are given by the quadratic formula.
Step-by-step explanation:
The complete expression for the polynomial function is f(x) = ax^64 + bx^3 + cx^2 + ...
This expression is a quadratic equation of the form at² + bt + c = 0, where the constants are a = 4.90, b = -14.3, and c = -20.0. Its solutions are given by the quadratic formula:
x = (-b ± √(b² - 4ac)) / (2a)