Решите уравнение log₂ (7х – 4) = 2 + log₂ 13. - вопрос №811729974213 от lukingrishal 09.12.2020 01:07

Question

Алгебра: Решите уравнение log₂ (7х – 4) = 2 + log₂ 13.

lukingrishal · Answer

Log₂(7x - 4) = 2 + log₂13                              ОДЗ: 7x - 4 0log₂(7x - 4) = log₂4 + log₂13                                 7x 4log₂(7x - 4) = log₂52                                               x 4/77x - 4 = 527x = 52 + 47x = 56x = 8...