Classify the following polynomials. Combine any like terms first.

2x-x2+4x+x2

x²5x²+3-2

xx²+x² - x²+3

7x-x + x +44²

-6x-x+6x-4x


The options for all of them are:
Quadratic Trinomial
Quadratic Binomial
Quadratic Monomial
Linear Monomial