our homework is actually a long one, about numerical analysis, roots of poylnomials, etc. the problem is i don't know how to do the first step, which is storing/saving a user-input polynomial(eg this form: x^3-4x^2+2). do i use arrays?strings? and how do you save the polynomial as a function so that you can get the value of the polynomial when a value for x is given(say x = 2, then, from the ex above, f(x) = -6).