Question

Сократите дробь a-5/a+2√5a+5!!!!!!!!!!!

Answer 1

Ответ:

$\frac{a-2\sqrt{5a+5} }{a-5}$

Объяснение:

($\frac{(\sqrt{a} -\sqrt{5})*(\sqrt{a}+\sqrt{5})\\}{(\sqrt{a}+\sqrt{5})^{2} } \\\\\\\frac{\sqrt{a}-\sqrt{5}}{\sqrt{a}+\sqrt{5}}*\frac{\sqrt{a}-\sqrt{5}}{\sqrt{a}-\sqrt{5} } \\\\\frac{(\sqrt{a}-\sqrt{5})^{2} }{a-5}\\\\\frac{a-2\sqrt{5a+5} }{a-5}$