The * operator multiplies two integers in ℤ/pℤ or two polynomials in ℤ/pℤ[x]. (See also Section 6.8.2.) For polynomial expressions, use the normal command to simplify.
Examples.
| ⎛ ⎝ | −2 | ⎞ ⎠ | %13 |
| ⎛ ⎝ | ⎛ ⎝ | −3 | ⎞ ⎠ | %13 | ⎞ ⎠ | x2+ | ⎛ ⎝ | ⎛ ⎝ | −24 | ⎞ ⎠ | %13 | ⎞ ⎠ | x+17%13 |