Question

is -10x^8 a monomial.?

Answer 1

yep! because there is no +,-, ect. sign. in total it is just one number

Answer 2

-10x^8 is indeed a monomial, because there is only one term. There is nothing else added or subtracted.

There are three types of "nomials":

Monomials: such as the one you have, they only have one term
Example: y,  6x^2,  19084v^22341

Binomials: Equations with two terms
Example: x+1,  v+4w,  k+1021s

Polynomials: Equation with more than three terms (no limit)
Example: x+5+9z, t+9u+8v