.Help Please!
Is this a monomial, binomial, trinomial, or
polynomial? Explain

Answer:
Polynomial
Step-by-step explanation:
=> x³ - 4x² + 1 + 3x² + x
=> x³ - x² + x - 1
This is a polynomial expression, as, there are 4 terms in the equation, viz., x³, x², x and -1.
Hope it helps.