An expression is a collection of numbers and variables, along with mathematical operations, but without an equality (or inequality) symbol.
It is two terms of an algebraic expression but if you mean -3 times -9 then it is 27
The expression, "is at most" is stating that there is no higher terms than what is being stated.
If you mean: 3x^2 +4y-1 then the given expression has 3 terms.
In math expression means when you have a number sentence without an equal sign.A mathematical or algebraic expression is a collection of terms that do not include an equality sign because it is not an equation. A mathematical or algebraic expression is a collection of terms that do not include an equality sign because it is not an equation.
An algebric expression can have any number of terms.