Сократить дробь (25-а)/(√а+5)

Question

Сократить дробь
(25-а)/(√а+5)

Answer 1

(25-а)/(√а+5) = (-а+25)/(√а + 5) = -(а-25)/(√а+5) = - (√а+5)(√а-5)/(√а+5) = -(√а - 5) = -√а + 5.