I know it is in standard form because there are no more like terms.
Part B: Polynomials are always closed under multiplication. Unlike with addition and subtraction, both the coefficients and exponents can change. The variables and coefficients will automatically fit in a polynomial. When there are exponents in a multiplication problem, they are added, so they will also fit in a polynomial.
A: 3x^2 + 4y^5 - 3. I know it's in standard form because I cannot simplify it anymore.
B: When subtracting polynomials, the variables and their exponents do not change. Only their coefficients will possibly change. the variables and exponents will only change with multiplication and division.