Lg x + 4 lg y = -7,5 система lg x^2 - 4 lg x^3=30 - вопрос №488878147524330 от 7077788 26.05.2023 02:52

Question

Алгебра: Lg x + 4 lg y = -7,5 система lg x^2 - 4 lg x^3=30 ! умоляю!

7077788 · Answer

Lgx + 4lgy = -7,5 lgx^2 - 4lgx^3 = 30 x 0 y 0 lgx^2 - 4lgx^3 = 30 = 2lgx - 12lgx = 30 | :2 lgx - 6lgx = 15 -5lgx = 15 lgx = -3 x = 10^(1/3) 4lgy = -7,5 - lgx 4lgy = -7,5 -(-3) = -7,5 +3 = -4,5 lgy = -4,5/4 = -1,125 = -9/8 y = 10^(8/9) c:...