既き約やく

na-adjective, noun which may take the genitive case particle 'no', noun

irreducible

Mathematics term for something that cannot be simplified further, such as a fraction or polynomial.

• この分ぶん数すうは既き約やく分ぶん数すうです。

  This fraction is in its simplest form.

• 既き約やく多た項こう式しきに因いん数すう分ぶん解かいする。

  Factor into irreducible polynomials.