Symbols of inclusion group terms together. You’re most familiar with parentheses as a symbol of inclusion, but there are others. Symbols of inclusion are symbols like parentheses, brackets, braces, absolute value bars, and division.
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The absolute value operation turns any value inside it into its distance from the origin, essentially turning both positive and negative numbers into only positive numbers. Always calculate the value inside the absolute value first, then apply the absolute value last.
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