Question

is 3x^2-4 is a polynomial​

Answer 1

Answer:

3x² - 4 is a polynomial.

3x^(2-4) is not a polynomial.

explanation :

your question isn't exactly clear.

if you are asking about 3x² - 4, then yes it is a polynomial.

if you are asking about 3x^(2-4) then, no!!!

because,

3x^(2-4) = 3x^(-2)

and in a polynomial, the variables should not have negative powers.