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Factor Theorem
The Factor Theorem connects the factors of a polynomial function to its function values. It states that for any polynomial function : if is a factor of , then the function evaluated at equals zero (). The reverse is also true: if evaluating the function at results in zero (), then is a factor of the polynomial function . This theorem implies that a divisor is a factor of whenever the division results in a remainder of zero.
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Ch.5 Polynomials and Polynomial Functions - Intermediate Algebra @ OpenStax
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Factor Theorem
Finding the Remainder Using the Remainder Theorem for f(x) = x^3 + 3x + 19 Divided by x + 2
Finding the Remainder Using the Remainder Theorem for f(x) = x^3 + 4x + 15 Divided by x + 2
Finding the Remainder Using the Remainder Theorem for f(x) = x^3 - 7x + 12 Divided by x + 3
A corporate analyst uses a polynomial function to model the quarterly revenue of a regional branch. To check the accuracy of their model for the 10th quarter, they divide the polynomial by the expression . According to the Remainder Theorem, which value is equivalent to the remainder of this division?
You are an analyst reviewing a report that models monthly expenses using a polynomial . According to the report's explanation of the Remainder Theorem, to find the remainder when dividing the polynomial by , you should evaluate the function at .
A production manager uses a polynomial function to model the weekly operating costs of a manufacturing plant. To find the remainder when dividing by various divisors using the Remainder Theorem, match each divisor with the correct functional evaluation that represents that remainder.
Verifying Polynomial Remainders in Financial Models
A technical writer is documenting the formal derivation of the Remainder Theorem for an algebra training manual. Arrange the following steps in the correct logical order to demonstrate why the remainder of a polynomial divided by is equal to .
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Determining if is a Factor of Using the Factor Theorem
Determining if is a Factor of Using the Factor Theorem
Determining if is a Factor of Using the Factor Theorem
A chemical engineer uses a polynomial function to model the concentration of a substance in a reaction at time . If the engineer observes that the concentration is zero at seconds (meaning ), which expression must be a factor of the polynomial according to the Factor Theorem?
An analyst uses a polynomial function to model the revenue of a product based on its price . If the analyst finds that the revenue is zero when the price is 15 dollars (meaning ), the Factor Theorem states that is a factor of the revenue function.
Factor Theorem in Structural Modeling
In your role as a business analyst, you are using polynomial functions to model sales data and identify break-even points where profit is zero. Match each observed data point or algebraic property of the profit model with its equivalent implication according to the Factor Theorem.
You are an inventory analyst using a polynomial model, , to forecast warehouse stock levels over time . If you determine that the inventory hits exactly zero at a specific time (meaning ), the Factor Theorem guarantees that the binomial expression must be a ____ of the polynomial function .