Question

Третье(даю 15 баллов)

Answer 1

$(1-\frac{1}{x}):(x-x^{2})=\frac{x-1}{x}*\frac{1}{x(1-x)}=-\frac{1}{x^{2}}\\\\Otvet:\boxed{-\frac{1}{x^{2}}}$

Answer 2

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