Horner's Rule/Examples/Arbitrary Example 1

Example of Use of Horner's Rule
The polynomial:
 * $\map p x = 4 x^3 - 2 x^2 + 3 x - 1$

can be expressed using Horner's rule as:
 * $\map p x = \paren {\paren {4 x - 2} x + 3} x - 1$