We are given a system of equations: $x = \sqrt{y^2 - \frac{1}{16}} + \sqrt{z^2 - \frac{1}{16}}$ $y = \sqrt{z^2 - \frac{1}{25}} + \sqrt{x^2 - \frac{1}{25}}$ $z = \sqrt{x^2 - \frac{1}{36}} + \sqrt{y^2 - \frac{1}{36}}$ We need to find the value of $7(x+y+z)^2$.
2025/3/23
1. Problem Description
We are given a system of equations:
We need to find the value of .
2. Solution Steps
Let's add all three equations:
If we assume , then we can have solutions of the form:
However, this solution would make , , and positive, and these solutions are unlikely to be the general solutions since the equations contain square roots.
Consider .
If , then
, which is imaginary.
Let us assume . Then
This leads to , which is not possible.
Let , , and .
Assume .
Then,
. Impossible.
Adding the given equations, we have
Assume .
Since , we need to find a general solution.
However, it appears that . This would make the roots
0. $x = \frac{9}{20}, y = \frac{11}{30}, z = \frac{5}{12}$.
So
Let's assume . Then the equation becomes:
.
Let us assume that . Then
Since x, y, z are real, we need , and .
If , , ,
Then , then
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If ,
. Then .
Consider . Then it can lead to the solution.
From the given equations, let . Then .
.
However, if , then .
If , then we have , which is 7(\frac{9}{4}) = \frac{63}{4}.
If , then .
Consider . . Then .
We consider the case where all terms under the square root are zero.
Then , ,
, ,
, .
Therefore , , .
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