Question

Si x+x ^-1 =4 calcular x^ 6 - x ^-6

Answer 1

X + X^-1=4,, X + 1/X=4
(X^2+1)/4=4
X^2=16-1
X= raíz de 15=3,87

X^6-X^-6=X^6 - 1/X ^6
(X^12-1)/6