3. Al dividir \( P=2 x^{3}-x^{2}+a x-1 \), por \( \quad Q=x+1 \), la división es exacta, entonces el valor de "a" es: A. 2 B. -4 C. \( 1 / 2 \) D. -2 E. Ninguna respuesta anterior es correcta

Solve the equation. \[ 2^{2 x+1}=8 \] The solution set is \( \{\square\} \). (Type an integer or a simplified fraction. Use a comma to separate answers as ne

Solve. \[ 7|x-1|+9 \geq 37 \] If all real numbers are solutions, click on "All reals". If there is no solution, click on "No solution".

Solve the equation. \[ \left(\frac{2}{5}\right)^{x}=\left(\frac{8}{125}\right) \] The solution set is \( \{\underbrace{3} \). (Type an integer or a simplified fraction. Use a comma to separate answers as needed.)

Solve. \[ |5 y-5|-6<9 \] If all real numbers are solutions, click on "All reals". If there is no solution, click on "No solution".

Solve the equation. \( 6^{x^{2}-3}=36^{x} \) The solution set is \( \{\square\} \). (Simplify your answer. Use a comma to separate answers as needed.)