\begin{align*}(adsbygoogle = window.adsbygoogle || []).push({});

AB &= \sqrt{(2-(-1))^2+(3-4)^2}\\

&= \sqrt{3^2+(-1)^2}\\

&= \sqrt{10}.

\end{align*}

is what i am entering.

This is the error i am getting;

misplaced alignment character &.

I am baffled.

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# Latex problem with alignment character and &

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