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[tex]( \frac{ a^{2}-2ab }{ b^{2} } ):( \frac{1}{a} - \frac{1}{b} )^{2}[/tex]
при a=3, b=2[tex] \frac{1}{7} [/tex]
[tex]( \frac{ a^{2}-2ab }{ b^{2} } ):( \frac{1}{a} - \frac{1}{b} )^{2}[/tex]
при a=3, b=2[tex] \frac{1}{7} [/tex]
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