It is a Term.
This is called the "commutative" property.
Term- a number, a variable, or a product of numbers and variables.
It is called a term.
A "product" is a binary operator. That means, you need two numbers (or variables) before you can define their product.
Yes.
any number or variable or product of numbers and variables
The product of nine negative real numbers is a negative real number.
Polynomial
Because it is a product of real numbers. And the set of real numbers is closed under multiplication.
135ab is a monomial, where 135 is its coefficient.A monomial is a number or a variable or a product of numbers and variables.
No, the product of two negative numbers is always a positive.
An algebraic expression or equation may be separated by a plus or minus sign, and it can consist of terms that are numbers or products of numbers and variables.