Example

Finding the Quotient of Polynomial Functions (x25x36)÷(x+4)(x^2 - 5x - 36) \div (x + 4) and Evaluating at x=5x = -5

To find the quotient function and evaluate it for the functions f(x)=x25x36f(x) = x^2 - 5x - 36 and g(x)=x+4g(x) = x + 4: Step 1 — Find (f/g)(x)(f/g)(x). Use the definition (f/g)(x)=f(x)g(x)(f/g)(x) = \frac{f(x)}{g(x)} and substitute the polynomials to form the expression x25x36x+4\frac{x^2 - 5x - 36}{x + 4}. Perform polynomial division to obtain the quotient. The result is x9x - 9. Thus, (f/g)(x)=x9(f/g)(x) = x - 9. Step 2 — Evaluate (f/g)(5)(f/g)(-5). Substitute 5-5 for xx into the simplified quotient function: (f/g)(5)=(5)9=14(f/g)(-5) = (-5) - 9 = -14.

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Updated 2026-04-29

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