[tex] \sqrt{6}sin(x+\frac{\pi}{4}) -2cos^{2} (x)=\sqrt{3}cos(x)-2
[/tex]
а) Найти [tex] x[/tex]
б) Найти [tex] x[/tex] на промежутке [tex] [\frac{7\pi}{2} ;5\pi] [/tex]
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