equations
That sounds like the definition for Recursive Formula.
It is an expression and if it contains an equality sign then it is an equation.
Yes, a mathematical expression can have no variables, but such an expression is usually not very useful. An example of a valid expression without variables is: 1+1=2
multiterm mathematical expression: a mathematical expression consisting of the sum of a number of terms, each of which contains a constant and variables raised to a positive integral power
Any expression that contains one or more variable, such as x; x+2; x+y; x2, etc. Depending on the values of the variables, the expression can also have different values.
An algebraic expression is a type of expression that contains a variable or variables.
An algebraic expression is a type of expression that contains a variable or variables.
An expression.
Expression
It is, in fact, called an expression. To be more precise, an algebraic expression.
A variable expression includes variables.
An algebraic expression contains one or more letters that stand for [numeric] variables.
A variable expression is an expression which contains variables(symbol that represents a certain value). For example, 4a-90. 4a-90 would be the expression an a is a variable
Algebraic expression
What are the choices?
That sounds like the definition for Recursive Formula.
It is an expression and if it contains an equality sign then it is an equation.