Final answer:
The subject of this question is polynomial long division in mathematics.
Step-by-step explanation:
The subject of this question is Mathematics, specifically polynomial long division.
In polynomial long division, a polynomial is divided by another polynomial, resulting in a quotient and a remainder. It is used to simplify polynomials or find a polynomial expression that is equivalent to a given expression.
Polynomial long division involves dividing the polynomial with the highest degree term (dividend) by the polynomial with the highest degree term (divisor).
The steps include dividing the highest degree term, multiplying the divisor bythe quotient, subtracting the result from the dividend, bringing down the next term, and repeating the process until the remainder has a lower degree than the divisor.