noun
In algebra, an expression consisting of variables and coefficients, involving only addition, subtraction, multiplication, and non-negative integer exponents.
この整式を因数分解してください。
Please factor this polynomial.
noun
integral expression
A broader term sometimes used in older or specific mathematical contexts to refer to an expression without fractional or negative exponents; often synonymous with polynomial in modern usage.
整式とは、文字についての整式のことです。
An integral expression is an expression that is integral with respect to the variables.