Răspuns:
[tex]{ \red{x = 18 \sqrt{3} - 18}}[/tex]
Explicație pas cu pas:
[tex]x( \sqrt{3} + 1) = 36 \\ ( \sqrt{3} + 1) \times x = 36 \\ x = {}^{ \sqrt{3} - 1) } \frac{36}{ \sqrt{3} + 1 } \\ x = \frac{36( \sqrt{3} - 1) }{ { \sqrt{3} }^{2} - {1}^{2} } = \frac{36( \sqrt{3} - 1) }{2} \\ { \red{x = 18 \sqrt{3} - 18}} [/tex]
Succes!
