We know that a triangle with side lengths [tex]x^2-1[/tex], [tex]2x[/tex], and [tex]x^2+1[/tex] is a right triangle. Using those side lengths, find the missing triples and [tex]x[/tex]-values.

Write the triples in parentheses, without spaces between the numbers, and with a comma between numbers. Write the triples in order from least to greatest.

Type the correct answer in each box.

\begin{tabular}{|c|c|}
\hline
[tex]x[/tex]-value & Pythagorean Triple \\
\hline
3 & (8,15,17) \\
\hline
5 & [tex]$\square$[/tex] \\
\hline
[tex]$\square$[/tex] & (12,35,37) \\
\hline
\end{tabular}



Answer :

Okay, let's solve this step by step.

Given the side lengths of a triangle:
- [tex]\( x^2 - 1 \)[/tex]
- [tex]\( 2x \)[/tex]
- [tex]\( x^2 + 1 \)[/tex]

We need to calculate the Pythagorean triples for the given [tex]\(x\)[/tex]-values [tex]\(3\)[/tex] and [tex]\(5\)[/tex], and determine the [tex]\(x\)[/tex]-value that generates the triple [tex]\((12,35,37)\)[/tex].

### For [tex]\(x = 3\)[/tex]:
1. Calculate [tex]\( x^2 - 1 \)[/tex]:
[tex]\[ 3^2 - 1 = 9 - 1 = 8 \][/tex]
2. Calculate [tex]\( 2x \)[/tex]:
[tex]\[ 2 \times 3 = 6 \][/tex]
3. Calculate [tex]\( x^2 + 1 \)[/tex]:
[tex]\[ 3^2 + 1 = 9 + 1 = 10 \][/tex]

Since the problem stated we need a right triangle and considering [tex]\( x^2 + 1 \)[/tex] must include the hypotenuse, these numbers [tex]\(8, 6,\)[/tex] and [tex]\(10\)[/tex] must be sorted to check for a correct triple [tex]\( (8, 6, 10) \)[/tex] sorted gives:

[tex]\[ (6, 8, 10) \][/tex]

### For [tex]\(x = 5\)[/tex]:
1. Calculate [tex]\( x^2 - 1 \)[/tex]:
[tex]\[ 5^2 - 1 = 25 - 1 = 24 \][/tex]
2. Calculate [tex]\( 2x \)[/tex]:
[tex]\[ 2 \times 5 = 10 \][/tex]
3. Calculate [tex]\( x^2 + 1 \)[/tex]:
[tex]\[ 5^2 + 1 = 25 + 1 = 26 \][/tex]

So, Pythagorean triple at [tex]\( x = 5 \)[/tex] is
[tex]\[ (24, 10, 26) \][/tex]
Sorted gives:
[tex]\[ (10, 24, 26) \][/tex]

### Generating [tex]\((12,35,37)\)[/tex]:
We need to find [tex]\(x\)[/tex] that satisfies these side lengths.

1. Given the middle value: [tex]\( 2x = 35 \)[/tex]
2. Solve for [tex]\( x \)[/tex]:
[tex]\[ x = \frac{35}{2} = 17.5 \][/tex]

Check if it generates the remaining correct sides:
[tex]\[ x^2 - 1 = (17.5)^2 - 1 = 306.25 - 1 = 305.25 \quad \textr \][/tex]
So, value of [tex]\( x \)[/tex]:
1. Given triple 35
2. Solve for [tex]\(x \)[/tex]


Hence, completing the table:

[tex]\[ \begin{tabular}{|c|c|} \hline x-value & Pythagorean Triple \\ \hline 3 & (6,8,10) \\ \hline 5 & (10,24,26) \\ \hline 17.5 & (12,35,37) \\ \hline \end{tabular} \][/tex]