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Evaluation is the process of finding the numerical value of an expression. For instance, suppose you wanted to know what x^3 was when x = 2. You would plug in 2 for x and get 2^3. This process is evaluation.
Simplifying an expression on the other hand doesn't necessarily involve finding any particular value. For instance, suppose you started with the expression (x^3)/(x^2) then recognized that the numerator and denominator share a common factor of x^2 and so rewrote the expression as x. This is simplification because you've put the expression into an equivalent form that may be easier or more useful to deal with, but you have not found a specific value.
You can also simplify numerical values -- for instance, 12/20 can be rewritten as 3/5. Often it's necessary to simplify a numerical expression after evaluating an algebraic one.
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What is the difference between a numerical expression and a variable expression?
A variable expression includes variables.
What is the difference between a algebraic equation and a algebraic expression?
An equation has an equal = sign whereas an expression does not.
What is difference between regular expression and regular definition in compiler?
Regular expression is built in and the regular definition has to build from regular expression........
What is the difference between an algebraic expression and numerical expression?
algebric uses variables and numerical uses numbers
What is the difference between a report and an evaluation?
a report is stating the facts plain and simple, whereas an evaluation is an analysis possibly with an opinion of the situation. An evaluation may also contain answers of how to improve the thing.
