Question 1090143

A polynomial is a combination of terms separated using + or - signs. 
Polynomials {{{cannot}}}{{{ contain}}}{{{ any}}}{{{ of}}} the following:
1. Variables raised to a negative or fractional exponent. ({{{2x^-2}}},{{{x^(1/2)}}}).
2. Variables in the denominator. ({{{1/x}}},{{{1/x^2}}}).
3. Variables under a radical. ({{{sqrt(x)}}},{{{3sqrt(x)}}}).
4. Special features. (trig functions, absolute values, logarithms, …).


so, {{{x^3 - 2 x^2 - 3x - 4}}} is a polynomial