November 2021 1 28 Report
упростите данные выражения 
[tex] \frac{ a^{2}-5a+6 }{ a^{2}+7a+12 }* \frac{ a^{2}+3a }{ a^{2}-4a+4 } [/tex]

[tex] \frac{ x^{2}+2x-3 }{ x^{2}+3x-10 } : \frac{ x^{2}+7x+12 }{ x^{2}-9x+14 } [/tex]

[tex] \frac{ \frac{1}{x}+ \frac{1}{y} }{ \frac{1}{x}- \frac{1}{y} } [/tex]

[tex] \frac{ \frac{a}{b}+ \frac{b}{a} }{ \frac{a}{b}- \frac{b}{a} } [/tex]

[tex] \frac{ \frac{1}{x} - \frac{1}{2x} }{ \frac{1}{ x^{2} } - \frac{1}{ 2x^{2} } } [/tex]

[tex] \frac{a- \frac{ x^{2} }{a} }{x- \frac{ a^{2} }{x} } [/tex]
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