You keep them the same if they have different bases
Yes, polynomials are a closed set under addition. This means that if you take any two polynomials and add them together, the result will also be a polynomial. The sum of two polynomials retains the structure of a polynomial, as it still consists of terms with non-negative integer exponents and real (or complex) coefficients.
Not every algebraic expression is a polynomial. A polynomial consists of terms that are non-negative integer powers of variables, combined using addition, subtraction, and multiplication. In contrast, algebraic expressions can include terms with negative or fractional exponents, such as (x^{-1}) or (x^{1/2}), which do not qualify as polynomials. Therefore, while all polynomials are algebraic expressions, not all algebraic expressions are polynomials.
why the exponents can not be negative
When multiplying numbers with exponents, you add the exponents.
The definition for polynomials is very restrictive. This is because it will give more information. It excludes radicals, negative exponents, and fractional exponents. When these are included, the expression becomes rational and not polynomial.
Yes.
Polynomials are the simplest class of mathematical expressions. The expression is constructed from variables and constants, using only the operations of addition, subtraction, multiplication and non-negative integer exponents.
descending
You keep them the same if they have different bases
Add them up providing that the bases are the same.
descending form
No.
If a term consists of one or more of: a numerical coefficientnon-negative integer exponents of variable(s),then it is a term of a polynomial. If a term consists of one or more of: a numerical coefficientnon-negative integer exponents of variable(s),then it is a term of a polynomial. If a term consists of one or more of: a numerical coefficientnon-negative integer exponents of variable(s),then it is a term of a polynomial. If a term consists of one or more of: a numerical coefficientnon-negative integer exponents of variable(s),then it is a term of a polynomial.
Not every algebraic expression is a polynomial. A polynomial consists of terms that are non-negative integer powers of variables, combined using addition, subtraction, and multiplication. In contrast, algebraic expressions can include terms with negative or fractional exponents, such as (x^{-1}) or (x^{1/2}), which do not qualify as polynomials. Therefore, while all polynomials are algebraic expressions, not all algebraic expressions are polynomials.
You can have negative exponents anywhere. When they are in the denominator, they are equivalent to positive exponents in the numerator of a fraction.
Polynomials cannot have negative exponent.