Question

log5 (10-2x)-log5 (4)=0

Answer 1

Решение
log₅ (10 - 2x) = log₅ 4
ОДЗ: 10 - 2x > 0, x < 5, x∈(- ∞; 5)
10 - 2x = 4
2x = 10 - 4
2x = 6
x = 3