Question

Решите, пожалуйста!!!!
lgx+lgy=4
lgx-lgy=6

Answer 1

Ответ:

$\left \{ {{lgx + lgy = 4} \atop {lgx - lgy = 6} } \right. \\ \\ \left \{ {{lgx = 4 - lgy} \atop {lgx - lgy = 6} } \right. \\ \\ 4 - lgy - lgy = 6 \\ - 2lgy = 2 \\ lgy = - 1 \\ y = 0.1 \\ \\ lgx = 4 + 1 = 5 \\ x = 100000 \\ \\ (100000;0.1)$