Запишиответ

Решиуравнение.

1. \(5^{3–x}=20+5^{x}\) ;

2. \(6^{x+2}–6^{x}–35=0\) ;

3. \(5^{5–2x}–20\cdot0,2^{3–2x}–5=0\) ;

4. \(4^{1–x}–0,5^{1–2x}=1\) .

Ответ:

1. \(x=\) [ ];

2. \(x=\) [ ];

3. \(x=\) [ ];

4. \(x=\) [ ].