The mathematical expression 2+2 has a value of 4. This is because when two numbers are added together, their values are combined to produce a new value. In the case of 2+2, the value of 2 is added to the value of 2, resulting in a new value of 4.
In mathematical notation, the plus sign (+) is used to indicate addition. When a plus sign appears between two numbers, it indicates that the numbers should be added together to produce a new value. In the expression 2+2, the plus sign indicates that the values of 2 and 2 should be added together to produce a new value.
In order to evaluate the expression 2+2, we can follow the order of operations, which is a set of rules that dictate the sequence in which mathematical operations should be performed. The order of operations specifies that addition should be performed before any other operation, so in the expression 2+2, we would first perform the addition of 2 and 2 to produce a new value of 4.
Therefore, the value of the expression 2+2 is 4.