Question 38867
{{{ x^-2 - 9x^-1 + 18 = 0 }}}


we can "alter" the look of this by multiplying every term by {{{x^2}}}. Doing this we get:


{{{ 1 - 9x + 18x^2 = 0 }}}
{{{ 18x^2 - 9x + 1 = 0 }}}
(6x - 1)(3x - 1) = 0


etc


jon.