Which of the following expressions is a polynomial? x^4+2x^3+5x^2-x+14

(x-y)/(3-x^2)

6/x-2

3x+2x-^3

Using the side-splitter theorem, daniel wrote a proportion for the segment formed by luke segment de. what is ec?

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Describe the end behavior of the function below. f(x)=(2/3)^x-2 a. as x increases, f(x) approaches infinity. b. as x decreases, f(x) approaches 2. c. as x increases, f(x) approaches -2. d. as x decreases, f(x) approaches negative infinity.