Question

сократите дробь
$\frac{ ^{2y - 10} }{25 - y { }^{2} }$
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Answer 1

$\displaystyle\bf\\\frac{2y-10}{25-y^{2} } =\frac{2\cdot(y-5)}{5^{2} -y^{2} } =\frac{2(y-5)}{(5-y)\cdot(5+y)} =-\frac{2}{y+5}$

Answer 2

Ответ:

Объяснение:

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