a binomial is an equation that has varibles connected with + or -

Binomial Expansion makes it easier to solve an equation. It brings an equation of something raised to a power down to a solveable equation without parentheses.

-1

No.

Y=3X2+1 is a Binomial Equation.

I guess you could say that? It's in reference to the scientific naming of organisms. "Genus species" where genus is capitalized and both are in Latin and italicizes. Are you confusing binomial nomenclature with the binomial equation in statistics (where order matters)