Ответ:
[tex] = \frac{ {x }^{2} - {y}^{2} }{ {y}^{2} } [/tex]
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Ответ:
[tex] = \frac{ {x }^{2} - {y}^{2} }{ {y}^{2} } [/tex]
y/3y^2-12*(y^2-4y+4)