Question

Сократите дробь 4х-16/х^2-16

Answer 1

4x-16 = 4.(x-4)
x kv -16 = (x+4).(x-4)
4x-16/k kv -16 = 4(x-4)/(x+4).(x-4) = 4/(x+4)
Polagajem, čto (x-4) bolše ili menše 0, x bolše ili menše 4.