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2: Powers, Roots, Order of Operations, and Evaluating Expressions
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2.1: Powers and Roots
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We can use the following operations on real numbers: addition, subtraction, multiplication, division, and absolute value. In addition to these operations, we can also apply powers and roots. Powers are as the notation for multiplying a number by itself multiple times. Another name for a power is an exponent.
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2.2: Order of Operations
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The order of operations represents a mathematical agreement of the order in which calculations should be performed.
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2.3: Evaluating Expressions
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In the Water Industry, we use many formulas to make calculations. As a result, we need to know how to evaluate expressions, that is, substitute known values for variables, and simplify the expression using the order of operations.