Question

6. Сократите дробь a-1/a-2a+1
A) 1/a-1
B) √a-1
C) √a+1/√a-1
D) 1/√a-1
E) va-1 Na+1 ​

Answer 1

a-1/a-2+1 = a-1/-a+1 = a-1/-(a-1) = -1