Hello all, thanks for the help.
Ive been trying to figure this out most of the day and its driving me crazy. Its probably not that difficult for most of you so I apologize if it's too easy to post.
solve for x:
4+1/x-1/x^2=0
thanks again.
Hello all, thanks for the help.
Ive been trying to figure this out most of the day and its driving me crazy. Its probably not that difficult for most of you so I apologize if it's too easy to post.
solve for x:
4+1/x-1/x^2=0
thanks again.
$\displaystyle
\begin{aligned}
x^{ - 2} + x^{ - 1} - 4 ~&=~ 0\\
\left( {x^{ - 1} } \right)^2 + x^{ - 1} - 4 ~&=~ 0\\
x^{ - 1} ~&=~ \frac{{ - 1 \pm \sqrt {17} }}
{2}\\
x_1 ~&=~ \frac{2}
{{\sqrt {17} - 1}}\\
x_2 ~&=~ - \frac{2}
{{1 + \sqrt {17} }}
\end{aligned}
$