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How to write this equation please

enter image description here

xs'e^x + xse^x + s^2e^{2x} − xse^x = e^{2x},

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  • 1
    Welcome to TeX.SE. Package cancel helps ;-) There might be other packages as well
    – user31729
    Jun 26, 2017 at 20:43
  • 1
    Also, please edit your question title to something a little more meaningful. Jun 26, 2017 at 20:43

2 Answers 2

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enter image description here

\documentclass{article}

\usepackage{cancel}

\begin{document}

\[
xs'e^x + \cancel{xse^x} + s^2e^{2x} − \cancel{xse^x} = e^{2x},
\]
\end{document}
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When you load the cancel package as suggested by Christian, you do the following:

xs'e^{x} + \cancel{cse^{x}} + s^2 e^{2x} - \cancel{xse^{x}} = e^{2x}

Notice the \cancel{} command.

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