Regular Expressions 101

Community Patterns

Community Library Entry

0

Regular Expression
Created·2025-10-22 18:16
Flavor·PCRE2 (PHP)

/
^(?:([-]?\d*)[x](?:\^2))(?:(?:\+(\d*)[x])?|(?:(\-\d*)[x])?)(?:(?:\+([\d]))?|(?:(\-[\d]))?)(?:(\=)|)(?:(0)|)$
/
Open regex in editor

Description

Matches second-degree polynomials and returns values a, b, c, sign, and 0.

Submitted by SpiderRocket