Answer
$5c^6$
Degree $=6$
Type $=$ Monomial
Work Step by Step
The given expression is
$=(9c^6-5b^4)-(4c^6-5b^4)$
Clear the parentheses.
$=9c^6-5b^4-4c^6+5b^4$
Group like terms.
$=9c^6-4c^6+5b^4-5b^4$
Simplify.
$=5c^6$
The greatest exponent of $c$ is $6$, so the degree of the polynomial is $6$.
There is one term, so the type of the polynomial is monomial.
