Solve the following exponential equation. Express irrational solutions in exact form. \( 5^{2 x}+5^{x}-56=0 \) Select the correct choice below and, it necessary, fill in the answer box to complete your choice. A. The solution set is (Simplity your answer. Use a comma to separate answers as needed. Use integers or fractions for any numbers B. There is no solution.

Вычислить следующие определители: а) \( \left|\begin{array}{cc}1 & -2 \\ -2 & 4\end{array}\right| \); б) \( \left|\begin{array}{ccc}1 & 2 & 0 \\ 0 & 0 & 3 \\ 5 & 0 & -1\end{array}\right| \), 2. Найти точку пересечения прямых \( l_{1}: 3 x-2 y=0 \) и \( l_{2}: y=-x+5 \). Построить прямые.

\( \sqrt { n ^ { 2 } - 1 } - ( n + 1 ) = \frac { ( n ^ { 2 } - 1 ) - ( n + 1 ) ^ { 2 } } { \sqrt { n ^ { 2 } - 1 } + ( n + 1 ) } = \frac { - 2 n - 2 } { \sqrt { n ^ { 2 } - 1 } + ( n + 1 ) } \rightarrow - 1 \)

Evaluate the following function. Your answer should be an integer. \( f(x)=-3^{2 x-2} \), for \( x=3 \) Your answer is \( f(3)=\square \)

1.1.1 \( x=\frac{4}{x}+3 \)

d) \( \begin{aligned} \frac{x}{2}-y & =\frac{5}{2} \\ 3 x+2 y & =-1(2)\end{aligned} \)