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Автор - BlekLady66

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Ответ

Автор - JuliaKovalchook
frac{8 x^{2} -2x-1}{16 x^{2} +8x+1} = frac{(4x+1)(2x-1)}{(4x+1)(4x+1)} = frac{2x-1}{4x+1}
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