For each function, determine whether it is a polynomial function.

Question

1. u(x) = 3x(x+1)(x-4)²
2. f(x) = 1/x⁴ - 3x⁹ +5
3. h(x) = -x² + 6x⁶
4. v(x) = 6√x

Are all the functions polynomials or not?

Answer 1

1. and 3. are polynomials.
2. and 4. are not polynomials.