Answer :
Hello,
[tex]u_{1}= -2 \\ u_{2}= -2 *(-2)=(-2)^2 \\ u_{3}= (-2)^2 *(-2)=(-2)^3 \\ u_{4}= (-2)^3 *(-2)=(-2)^4 \\ ...\\ \boxed{u_{n}= (-2)^n} \\ [/tex]
[tex]u_{1}= -2 \\ u_{2}= -2 *(-2)=(-2)^2 \\ u_{3}= (-2)^2 *(-2)=(-2)^3 \\ u_{4}= (-2)^3 *(-2)=(-2)^4 \\ ...\\ \boxed{u_{n}= (-2)^n} \\ [/tex]