Question

сократите дробь!!!!!!!плизззззз

Answer 1

$frac{a-sqrt{a}-2}{2-sqrt{a}}=frac{(sqrt{a})^2-sqrt{a}-2}{-(sqrt{a}-2)}=frac{(sqrt{a}+1)(sqrt{a}-2)}{-(sqrt{a}-2)}=-(sqrt{a}+1)\\Zamechanie:quad (sqrt{a})^2-sqrt{a}-2=t^2-t-2=0; to ; t_1=-1,t_2=2\\t^2-t-2=(t+1)(t-2)=(sqrt{a}+1)(sqrt{a}-2)$