#### Answer

Standard form: $-4a^4+a^3=a^2$
Degree = 4
Number of terms = 3
Thus, the polynomial is a quartic trinomial

#### Work Step by Step

RECALL:
The standard form of a polynomial has the terms arranged in descending degree order.
This means that the standard form of the given polynomial is
$-4a^4+a^3+a^2$
This polynomial has degree 4 and has three terms.
Thus, the polynomial is quartic trinomial.