### Concept (1)

We have rational functions whenever we have a fraction that has a polynomial in the numerator and/or in the denominator. An excluded value in the function is any value of the variable that would make the denominator equal to zero. To find the domain, list all the values of the variable that, when substituted, would result in a zero in the denominator.

### Sample Problems (3)

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Write each polynomial in standard form. Find the degree.

a) 2x² − x³ + 4x − 8
b) 15x⁸ − 10x⁵ + 5
c) 8
###### Problem 1
How to write polynomials in standard form and find their degrees.
###### Problem 2
How to give a polynomial a two word name, including monomial, binomial, trinomial, polynomial, constant, linear, quadratic, cubic, quartic, or n-th degree.
###### Problem 3
Polynomial vocabulary, including standard form, term, exponent, variable, leading coefficient, degree, and "like terms"