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Consider this product:
[tex]\[
\frac{x^2 - 3x - 10}{x^2 - 6x + 5} \cdot \frac{x - 2}{x - 5}
\][/tex]

The simplest form of this product has a numerator of [tex]\(\square\)[/tex] and a denominator of [tex]\(\square\)[/tex].

The expression has an excluded value of [tex]\(x = 5 \vee \square\)[/tex].

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Sagot :

Sure, let's solve the problem step-by-step to find the simplest form of the given product and determine any excluded values.

We begin with the given product:
[tex]\[ \frac{x^2 - 3x - 10}{x^2 - 6x + 5} \cdot \frac{x - 2}{x - 5} \][/tex]

First, we factorize the expressions in both the numerator and the denominator.

### Step 1: Factorize the numerator and the denominator

Factorize [tex]\(x^2 - 3x - 10\)[/tex]:
[tex]\[ x^2 - 3x - 10 = (x - 5)(x + 2) \][/tex]

Factorize [tex]\(x^2 - 6x + 5\)[/tex]:
[tex]\[ x^2 - 6x + 5 = (x - 1)(x - 5) \][/tex]

Now, substitute the factored forms into the product:
[tex]\[ \frac{(x - 5)(x + 2)}{(x - 1)(x - 5)} \cdot \frac{x - 2}{x - 5} \][/tex]

### Step 2: Simplify the expression

Combine the numerator and the denominator:
[tex]\[ \frac{(x - 5)(x + 2)(x - 2)}{(x - 1)(x - 5)(x - 5)} \][/tex]

Notice that the factor [tex]\((x - 5)\)[/tex] appears in both the numerator and the denominator. We can cancel one [tex]\((x - 5)\)[/tex]:

[tex]\[ \frac{(x + 2)(x - 2)}{(x - 1)(x - 5)} \][/tex]

The numerator [tex]\((x + 2)(x - 2)\)[/tex] simplifies to:
[tex]\[ x^2 - 4 \][/tex]

Thus, the simplified form is:
[tex]\[ \frac{x^2 - 4}{(x - 1)(x - 5)} \][/tex]

### Step 3: Identify excluded values

The expression is undefined where the denominator is zero. We have:

[tex]\[ (x - 1)(x - 5) = 0 \][/tex]

Solving for [tex]\(x\)[/tex], we get:
[tex]\[ x = 1 \quad \text{or} \quad x = 5 \][/tex]

### Final answer

Therefore, the simplest form of the given product is:
[tex]\[ \frac{x^2 - 4}{(x - 1)(x - 5)} \][/tex]

The expression has excluded values at:
[tex]\[ x = 1 \quad \text{or} \quad x = 5 \][/tex]

So, the correct answers for the given drop-down menus are:

The simplest form of this product has a numerator of [tex]\(x^2 - 4\)[/tex] and a denominator of [tex]\((x - 1)(x - 5)\)[/tex]. The expression has an excluded value of [tex]\(x = 5 \vee x = 1\)[/tex].
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