9 lines
237 B
TeX
9 lines
237 B
TeX
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\documentclass[preview]{standalone}
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\usepackage[english]{babel}
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\usepackage{amsmath}
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\usepackage{amssymb}
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\begin{document}
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\begin{align*}
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a \cdot a + a \cdot b + b \cdot a + b \cdot b = a^2 + 2ab + b^2
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\end{align*}
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\end{document}
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