Numeric and string values, variables, function calls and operators grouped together to calculate value of something are called expressions. Examples:
dx = 100 dy = 200 length = sqrt(dx^2 + dy^2) text = "Distance is: " & lengthExpressions could be assigned to variables or used in functoin calls. In the above example expression "sqrt(dx^2 + dy^2)" is assigned to variable length. At the same time expression "dx^2 + dy^2" was used as a parameter to function "sqrt".
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