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Simplifying and Using the Negative Exponent Definition
Apply the negative exponent definition to two expressions that combine multiplication with a negative exponent — one where the exponent applies to a single factor, and one where parentheses make the exponent apply to the entire product. The contrasting results illustrate why the order of operations matters when negative exponents and multiplication appear together.
ⓐ : According to the order of operations, exponents are evaluated before multiplication. Apply the negative exponent definition to first: . The expression becomes . Multiply: .
ⓑ : The parentheses require the product inside to be simplified before the exponent is applied. Compute first, giving . Now apply the negative exponent definition: .
Although both expressions involve the same numbers and operations, while . Without parentheses, the exponent applies only to the factor directly beneath it (). With parentheses, the entire product () becomes the base of the negative exponent. This mirrors the general principle that parentheses change which quantity the exponent acts on.
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A quality control inspector uses the expression 10^-3 to represent a tolerance level in a technical manual. According to the definition of negative exponents, which of the following is the correct way to rewrite this expression using a positive exponent?
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Learn After
In a company's inventory spreadsheet, the formula for a 'shrinkage adjustment' is entered as (4 * 2)^-1. According to the order of operations, which value is the base for the exponent -1?
A logistics coordinator is reviewing two different formulas used to calculate shipping adjustments in a spreadsheet. Match each expression to the correct description of which value serves as the base for the exponent -1.
A technician is using the formula 4 · 2^{-1} to adjust a sensor reading. According to the order of operations, the negative exponent applies only to the number ____.
A logistics coordinator is simplifying the formula to adjust shipping weights. Arrange the following steps in the correct order to evaluate the expression according to the order of operations.
A technical analyst is entering the formula into a calculation engine. True or False: The parentheses in this expression ensure that the entire product of 4 and 2 serves as the base for the negative exponent.
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A technical analyst is auditing a company's calculation engine to ensure legacy formulas are producing the correct outputs. Match each mathematical expression used in the system to its simplified numerical value.
A billing specialist is reviewing a spreadsheet formula used for currency conversion: $4 \cdot 2^{-1}-1$ must be evaluated before the multiplication by 4 is performed?