If P(x) = 2 x4 + 3 x + 4 x +5 +6 is written in nested form, how many total operations (including additions and multiplications) are needed to evaluate P(x) for a given input x ? If the Secant Method is applied to find the root of f(x) = x + 4x -1 = 0, and the initial guesses are xo = 0 and x = 1, find the next guess x2.