If `alpha` and `beta` are the roots of the equation `x^2-3x-15=0` and `(n)=alpha^n+beta^n` then find the value of `(f(8)-3f(7)+f(6))/(2f(6))`

If alpha, beta are the roots of the equation x^(2)-3 x-15=0 , and f(n)=alpha^(n)+beta^(n) , then (f(8)-3 f(7)+f(6))/(2 f(6)) is equal to

Let alpha and beta be the roots of the equation x^(2)-6x-2=0 If a_(n)=alpha^(n)-beta^(n) for n>=0 then find the value of (a_(10)-2a_(8))/(2a_(9))

If ""_(alpha)and _(beta) are the roots of equation x^(2)-3x+1=0and a_(n)=alpha^n+beta^(n),ninN then value of (a_(7)+a_(5))/(a_(6))=

If ""_(alpha)and _(beta) are the roots of equation x^(2)-3x+1=0and a_(n)=alpha^n+beta^(n),ninN then value of (a_(7)+a_(5))/(a_(6))=

If alpha and beta are the roots of the equation 3x^(2)+7x+3=0 Find the value of alpha beta:

Let alpha and beta be the roots of the equation x^2-6x-2=0 If a_n=alpha^n-beta^n for ngt=0 then find the value of (a_10-2a_8)/(2a_9)

If alpha and beta are the roots of the equation 2x^2+3x-6 then find the value of alpha^2+beta^2