Question

Which of the following expressions are polynomials?

Check all that apply.

A. x3 + 2x^2
B. 5/x-1
C. 6x^2+4sqr x
D. -9x
E. 2x^-3 - 5x^-1 + 3
F. 1/4x^5+1/3x^4-1/2x^3

Answer 1

Polynomials, -poly "many", -nomial "terms". So, "Many terms"
Examples of Polynomials:
\[x+1,~~~~~3x^2+3x+2,~~~~~~\frac{2}{x}+1\]
Examples of non-polynomials:
\[x,~~x^2,~~3,~~\frac{2}{x-1}\]

Answer 2

so it would be a b c e f

Answer 3

no its a c e

Answer 4

Nope, B and D are not polynomials

Answer 5

What about F?

Answer 6

i know d isnt so it acfe?

Answer 7

Yup

Answer 8

c is not a polynomial

Answer 9

C is a polynomial

Answer 10

it said a e f are and c was wrong.

Answer 11

Look at it, it contains 2 terms
\[6x^2+4\sqrt x\]

Answer 12

yes but the quiz said no lol

Answer 13

The quiz is wrong