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Subtraction of Polynomial Functions
Just as polynomials can be subtracted, polynomial functions can also be combined through subtraction. For any two polynomial functions and , their difference is defined by the mathematical operation: . To evaluate the difference between two polynomial functions, substitute their defining polynomial expressions into this equation, carefully distribute the subtraction sign across the second polynomial, and then simplify the result by combining like terms.
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Intermediate Algebra @ OpenStax
Ch.5 Polynomials and Polynomial Functions - Intermediate Algebra @ OpenStax
Algebra
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Evaluating a Polynomial Function
Examples of Polynomial Functions: and
Subtraction of Polynomial Functions
Addition of Polynomial Functions
Quadratic Function
A business analyst uses the function to model a company's projected revenue over months. Given that the output values of this function are determined by a polynomial expression, how should this function be classified?
Classifying Professional Mathematical Models
A business analyst uses the function to model the projected growth of a startup company. True or False: This model is correctly classified as a polynomial function because its range values are defined by a polynomial expression.
A quality control engineer uses the function to monitor the thickness of a steel plate during production. Because the range values of this function are defined by a polynomial expression, the relationship is formally categorized as a(n) ____ function.
Classifying Revenue Forecasting Models
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Finding for and
A logistics manager uses the function to represent the total time required for a delivery route and to represent the time spent on rest stops. To determine the function for active driving time, the manager must calculate the difference . According to the mathematical definition of subtracting functions, which of the following expressions is equivalent to ?
A business analyst calculates a company's net profit function by subtracting the total expense function from the total revenue function . To evaluate this difference correctly, the analyst follows a specific three-step algebraic process. Arrange the following steps in the correct order to evaluate .
An inventory manager uses the function to calculate sellable stock, where is total inventory and is the number of damaged items. True or False: According to the mathematical process for subtracting functions, the manager must distribute the subtraction sign across every term within the polynomial expression for to evaluate correctly.
A project manager uses mathematical models to track various expenses. When calculating the difference between two functions, such as total budget and current spending, specific notations and steps must be recalled. Match each mathematical element of the function subtraction process with its correct description.
An operations manager calculates the difference between an efficiency model and a waste model . To correctly evaluate , the manager substitutes the polynomial expressions and then must carefully distribute the ____ sign across the second polynomial before combining like terms.