Intro and Add/Sub Polynomials

Is f(x) a polynomial function? If not, why not.

What is the degree of

Select TWO vocabulary words that describe this polynomial:

Select TWO vocabulary words that describe this polynomial:

Select TWO vocabulary words that describe this polynomial:

Which of the pairs below do NOT represent like terms?

Select the option below that is correctly ordered in descending powers of x

What is the simplified form of the equation below in descending powers of x:

Add the following polynomials: (2x³ + 7x² + x) + (2x² - 4x - 12)

Subtract the following polynomials: (5x² - 2x - 1) - (3x² - 5x + 7)

Subtract the following polynomials: (3a² + 2a - 2) - (a² - 3a + 7)