1)√(20)-√(x+2)=√5
2)√(x+2)>x Ответ: (-1;2] Можете объяснить, как оно решается?
3) Решить систему неравенств
√(x^2-16)>-16
3^(x^2 )>1/27

[tex] \left \{ {{√(x^2-16)\ \textgreater \ -16} \atop { 3^(x^2 )\ \textgreater \ 1/27}} \right. [/tex]
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