soving polynomial equation with negative powers

-HELLO how can I find the zeros of this equation : ax^(-1)+bx^(-2)+cx^(-3)+...=0

Answer 1

[Walter Roberson]

If the last term is Z * x^(-P), then multiply the equation by x^P, transforming it into

a*x^(P-1) + b*x^(P-2) + c*x^(P-3) + .... Z = 0

then you can use roots()

If you think about this for a second, you can see that you can skip the roots() step if your coefficients are arranged in the right order.

Answer 2

[Hamed]

thanks Walter.