Answer :

To simplify the given fraction [tex]\(\frac{2u^2 - 26u + 80}{u^2 - 4u - 5}\)[/tex], we will follow these steps:

1. Factorize the numerator and the denominator (if possible).

Let's start with the numerator: [tex]\(2u^2 - 26u + 80\)[/tex].

We can look for two numbers that multiply to [tex]\(2 \times 80 = 160\)[/tex] and add to [tex]\(-26\)[/tex]. These two numbers are [tex]\(-16\)[/tex] and [tex]\(-10\)[/tex].

So, we can split the middle term and rewrite the numerator:
[tex]\[2u^2 - 26u + 80 = 2u^2 - 16u - 10u + 80\][/tex]

Next, we factor by grouping:
[tex]\[= 2u(u - 8) - 10(u - 8)\][/tex]
[tex]\[= (2u - 10)(u - 8)\][/tex]

Remember to factor out [tex]\(2\)[/tex] from [tex]\(2u - 10\)[/tex] to simplify it further:
[tex]\[= 2(u - 5)(u - 8)\][/tex]

Now, let's factor the denominator: [tex]\(u^2 - 4u - 5\)[/tex].

Similarly, we look for two numbers that multiply to [tex]\(-5\)[/tex] and add to [tex]\(-4\)[/tex]. These two numbers are [tex]\(-5\)[/tex] and [tex]\(1\)[/tex].

So, we can factor the quadratic directly:
[tex]\[u^2 - 4u - 5 = (u - 5)(u + 1)\][/tex]

2. Substitute the factored forms into the original fraction.

Now our fraction looks like:
[tex]\[ \frac{2(u - 5)(u - 8)}{(u - 5)(u + 1)} \][/tex]

3. Cancel out common factors from the numerator and the denominator.

We see that [tex]\((u - 5)\)[/tex] is a common factor in both the numerator and the denominator. Therefore, we can cancel [tex]\((u - 5)\)[/tex]:
[tex]\[ \frac{2(u - 8)}{u + 1} \][/tex]

4. Write the final simplified fraction.

After canceling the common factors, we are left with:
[tex]\[ \frac{2(u - 8)}{u + 1} \][/tex]

So, the simplified form of the given fraction is:
[tex]\[ \boxed{\frac{2(u - 8)}{u + 1}} \][/tex]