In this lesson, the instructor covers the order of operations for mathematical expressions. They review the sets and operations of real numbers and the shorthand for repeated addition and multiplication. The key takeaway is that parentheses override any other operation and should be done first, followed by exponents, multiplication and division, and finally addition and subtraction. The instructor emphasizes that it's unnecessary to memorize the acronym PEMDAS and provides an alternative method to approach problems with multiple operations.
An introduction to order of operations for computations of mathematical expressions.
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