Math Problem Statement

If f ( x ) = x 2 - x - 6 and g ( x ) = x - 3,

find f ( x ) / g ( x )

Solution

To find f(x)g(x)\frac{f(x)}{g(x)}, we'll first substitute the given functions f(x)f(x) and g(x)g(x) and then simplify.

Given: f(x)=x2x6f(x) = x^2 - x - 6 g(x)=x3g(x) = x - 3

Now, we want to find: f(x)g(x)=x2x6x3\frac{f(x)}{g(x)} = \frac{x^2 - x - 6}{x - 3}

To simplify this, we can try to factor the numerator x2x6x^2 - x - 6.

The numerator x2x6x^2 - x - 6 factors as: x2x6=(x3)(x+2)x^2 - x - 6 = (x - 3)(x + 2)

So we have: x2x6x3=(x3)(x+2)x3\frac{x^2 - x - 6}{x - 3} = \frac{(x - 3)(x + 2)}{x - 3}

As long as x3x \neq 3, the x3x - 3 terms cancel out, giving: f(x)g(x)=x+2\frac{f(x)}{g(x)} = x + 2

Final Answer: f(x)g(x)=x+2forx3\frac{f(x)}{g(x)} = x + 2 \quad \text{for} \quad x \neq 3

Would you like further details or have any questions about this solution?

Here are some related questions you might find interesting:

  1. How do you factor a quadratic expression like x2x6x^2 - x - 6?
  2. What happens if x=3x = 3 in the expression f(x)g(x)\frac{f(x)}{g(x)}?
  3. Can you find the remainder when f(x)f(x) is divided by g(x)g(x)?
  4. How does the graph of f(x)f(x) compare to the graph of g(x)g(x)?
  5. What is the domain of the function f(x)g(x)\frac{f(x)}{g(x)}?

Tip: When simplifying expressions, always check if there are restrictions on the values of xx due to potential division by zero.

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Math Problem Analysis

Mathematical Concepts

Algebra
Quadratic Equations
Function Operations

Formulas

Quotient of functions formula: \(\frac{f(x)}{g(x)}\)

Theorems

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Suitable Grade Level

Grades 9-12