Question

please help :)
these polynomials?
A. f(x)=3x+(4/3)x^3-7
B. g(x)= -5x^3+x-3/x
C. h(x)= x^3sqrt5+x-3
D. k(x)= 25x^2-x^3+x^5

Answer 1

a polynomial is any variable with a positive exponent

Answer 2

\[3x^5\] is a polinomial

Answer 3

I got no for that bc of the fraction but im not sure haha

Answer 4

\[3\sqrt{x} \] or \[3x^(1/2)\] are not polinomials

Answer 5

i am sorry, not just positive exponent, the exponent has to be a positive integer

Answer 6

so the previous ones are not polinomials

Answer 7

so is 2 yes 3 and 4 no and 5 yes?

Answer 8

give me a sec

Answer 9

2 is yes

Answer 10

3 is no because \[3/x\] is the same as \[3x^(-1)\]

Answer 11

4 is yes

Answer 12

why is 4 yes?

Answer 13

because whatever the coeficients are does not really matters

Answer 14

we just care about the variables having positive integers

Answer 15

get it?

Answer 16

and finally 5 is yes

Answer 17

okay i get it! thank you :)

Answer 18

for the same reason

Answer 19

no problem :)