因いん数すう定てい理りいんすうていりMeanings1nounfactor theoremmathematicsA theorem in algebra stating that a polynomial f(x) has a factor (x - a) if and only if f(a) = 0.因いん数すう定てい理りを使つかって、多た項こう式しきの因いん数すう分ぶん解かいが簡かん単たんになる。Using the factor theorem, factoring polynomials becomes easier.
