# Why I can not align this equations?

I could can align first line with other lines

\begin{eqnarray*}
\dfrac{\partial^2 P_{ijl}}{\partial \tau_l \partial \phi} & = &\dfrac{\partial}{\partial \tau_l}\left(P_{ijl}(1-P_{ijl})\frac{\partial \eta_{ijl}}{\partial \phi}\right) \\

& = &\dfrac{\partial P_{ijl}}{\partial \tau_l}\left(1-P_{ijl}\right)\frac{\partial \eta_{ijl}}{\partial \phi}+\frac{\partial \left(1-P_{ijl}\right)}{\partial \tau_l}P_{ijl}\frac{\partial \eta_{ijl}}{\partial \phi}+P_{ijl}(1-P_{ijl})\frac{\partial }{\partial \tau_l}\left(\frac{\partial \eta_{ijl}}{\partial \phi}\right) \\

& = &  ${P_{ijl}}{(1-P_{ijl})^2}$\dfrac{\partial \eta_{ijl}}{\partial \phi}-P^2_{ijl}\left(1-P_{ijl}\right)\frac{\partial \eta_{ijl}}{\partial \phi}+0 \\

& = &  ${P_{ijl}}{(1-P_{ijl})}(1-{2P}_{ijl})$\dfrac{\partial \eta_{ijl}}{\partial \phi}
\end{eqnarray*}

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