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which is and isn't a polynomial
4/x^4+3/x^2-2/x^2-1
^4√x-^3√x+4√x-8x+16
x^3-7x^2+9x-5x^4-20
x^5-5x^4+4x^3-3x^2+2x-1
3x^2-5x^4+2x-12
x^-5-5x^-4+4x^-3-3x^-2+2x^-1-1
First-person (only if there are 2 people obviously) will get brainliest

Respuesta :

Answer:

Number 3,  4, and 5 are polynomials

Step-by-step explanation:

Polynomials do not  contain fractions as in expression 1 nor radicals as in expression 2.

Also they do not contain negative exponents as in expression 6.

Polynomials contain integer coefficients only.

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