If alpha,beta\\alpha, \\betaalpha,beta are roots of ax2+bx+c=0ax^2+bx+c=0ax2+bx+c=0, then 1/alpha+1/beta1/\\alpha + 1/\\beta1/alpha+1/beta is:
−b/c-b/c−b/c
b/cb/cb/c
−b/a-b/a−b/a
c/ac/ac/a