The correct option is B Binomial
The given expression is,
(6x2−8x+9y2+4)−(5x2+2x+6y2+4+x2)
Simplifying the expression, we get
(6x2−8x+9y2+4)−(6x2+2x+6y2+4)
Grouping all like terms, we get,
(6x2−6x2)+(9y2−6y2)+(−8x−2x)+(4−4)
=3y2−10x
An algebraic expression which has two non zero unlike terms is called a binomial expression. Since, only two unlike terms are present, it is a binomial expression.