Question

Which of the following are polynomials.

Answer 1

\[A) x^5+x-\frac{ 1 }{ 4 } B)-4c^2-\frac{ 5 }{ c } C)5y+\sqrt{y}+7 D) -2t^4-6t+\]

Answer 2

@jim_thompson5910

Answer 3

@Mathmuse

Answer 4

I cheated and went to wikipedia but the definition is good

"a polynomial is an expression of finite length constructed from variables (also called indeterminates) and constants, using only the operations of addition, subtraction, multiplication, and non-negative integer exponents."

pay particular attention to the the very last qualifier of the quote

Answer 5

@mathstudent55

Answer 6

Which exponents are not integers in the expressions you listed?

Answer 7

A & B?

Answer 8

in a) the exponents on you x variable are 5, and 1. both integers

in b) the exponents on the c variable are 2, -1. both integers, but one negative. this does not fit the description of a polynomial

Answer 9

identify the exponents in c) and d)

Answer 10

So A is one and C?

Answer 11

So,A,C,D

Answer 12

A & D

Answer 13

right, the exponent of a square root is 1/2, not an integer

Answer 14

thank you

Answer 15

while the exponents in d) areall positive and integers