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\vspace{3cm}

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\vspace{3cm}

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\vspace{3cm}

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\vspace{5cm}

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\newpage

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\vspace{3cm}

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\vspace{4cm}

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\vspace{5cm}

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\vspace{5cm}

\YYToi{\;\;$2(x^2+x+1)=3-3x$}{\;\;$3x(x-2)=(x-2)(x+2)$}

\newpage
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