3/2 + 1/4
pq=c+rq
find q
2Q^3+2Q^2-2Q-501=0
8 x 2 - 3 + 6
ab+bc=c
find b
-3=1/x
((0.9^2/34+1.1^2/34)^2)/((1/33)*(0.9^2/34)^2+(1/33)*(1.1^2/34)^2)
-6$a_{n-1}$ -9$a_{n-2}$
$a_{0}$ =3
$a_{3}$ =6
By substitute u=x+x^‐1, solve, x⁴+4x³+5x²+4x+1=0