### 11.8.2 Addition in ℤ/pℤ or in ℤ/pℤ[x]

The + operator adds two integers in ℤ/pℤ or two polynomials in ℤ/pℤ[x]. (See also Section 7.3.2.) For polynomial expressions, use the normal command to simplify.

#### Examples

For integers in ℤ/pℤ:

3%13+10%13

0%13 |  |  |  |  |  |  |  |  |  |

For polynomials with coefficients in ℤ/pℤ:

normal((11*x+5)%13+(8*x+6)%13)

or:

normal((11% 13*x+5%13)+(8% 13*x+6%13))

| ⎛ ⎝ | 6%13 | ⎞ ⎠ | x+ | ⎛ ⎝ | −2 | ⎞ ⎠ | %13