If you mean -1/3x try using y=3x
Answer:
The specific latent heat.
1+2= two pretty best friends
For this case we must solve the following equation:
![\sqrt {4x ^ 2} - \sqrt {x ^ 2} = 6](https://tex.z-dn.net/?f=%5Csqrt%20%7B4x%20%5E%202%7D%20-%20%5Csqrt%20%7Bx%20%5E%202%7D%20%3D%206)
To solve we follow the steps below:
We square both sides of the equation squared:
![(\sqrt {4x ^ 2} - \sqrt {x ^ 2}) ^ 2 = 6 ^ 2\\(\sqrt {4x ^ 2}) ^ 2-2 (\sqrt {4x ^ 2}) (\sqrt {x ^ 2}) + (\sqrt {x ^ 2}) ^ 2 = 36\\4x ^ 2-2 (\sqrt {4x ^ 2 * x ^ 2}) + x ^ 2 = 36\\4x ^ 2-2 (\sqrt {4x ^ 4}) + x ^ 2 = 36\\4x ^ 2-2 (2x ^ 2) + x ^ 2 = 36\\4x ^ 2-4x ^ 2 + x ^ 2 = 36\\x ^ 2 = 36\\x = \pm \sqrt {36}\\x = \pm6](https://tex.z-dn.net/?f=%28%5Csqrt%20%7B4x%20%5E%202%7D%20-%20%5Csqrt%20%7Bx%20%5E%202%7D%29%20%5E%202%20%3D%206%20%5E%202%5C%5C%28%5Csqrt%20%7B4x%20%5E%202%7D%29%20%5E%202-2%20%28%5Csqrt%20%7B4x%20%5E%202%7D%29%20%28%5Csqrt%20%7Bx%20%5E%202%7D%29%20%2B%20%28%5Csqrt%20%7Bx%20%5E%202%7D%29%20%5E%202%20%3D%2036%5C%5C4x%20%5E%202-2%20%28%5Csqrt%20%7B4x%20%5E%202%20%2A%20x%20%5E%202%7D%29%20%2B%20x%20%5E%202%20%3D%2036%5C%5C4x%20%5E%202-2%20%28%5Csqrt%20%7B4x%20%5E%204%7D%29%20%2B%20x%20%5E%202%20%3D%2036%5C%5C4x%20%5E%202-2%20%282x%20%5E%202%29%20%2B%20x%20%5E%202%20%3D%2036%5C%5C4x%20%5E%202-4x%20%5E%202%20%2B%20x%20%5E%202%20%3D%2036%5C%5Cx%20%5E%202%20%3D%2036%5C%5Cx%20%3D%20%5Cpm%20%5Csqrt%20%7B36%7D%5C%5Cx%20%3D%20%5Cpm6)
We choose the positive value because we talk about $. ![x = 6](https://tex.z-dn.net/?f=x%20%3D%206)
Answer:
$6
FIRST: flip the equation.
|x|-2=6
Now, add 2 to both sides.
|x|-2+2=6+2
Simplify.
|x|=8
Apply absolute rule: If |u| =a, a>0, then u=a or u = -a
x=8
x=-8