Use LaTeX:  \displaystyle a_1=-6 and LaTeX:  \displaystyle a_2=-2 and LaTeX:  \displaystyle a_n=5a_{n-1} -9a_{n-2} to find LaTeX:  \displaystyle a_{6}

Finding the next term in the sequence gives LaTeX:  \displaystyle a_3=(5)(-6)+(-9)(-2)=-12
LaTeX:  \displaystyle a_{4}=(5)(-2)+(-9)(-12)=98 .
LaTeX:  \displaystyle a_{5}=(5)(-12)+(-9)(98)=-942 .
LaTeX:  \displaystyle a_{6}=(5)(98)+(-9)(-942)=8968 .