x+3ax+3ax+3ax−3ax-3ax−3a-x+ax+ax+ax−3ax-3ax−3a=0x2−9a2x^2 - 9a^2x2−9a2 - x2−3ax−ax+3a2x^2 - 3ax - ax + 3a^2x2−3ax−ax+3a2 = 0x^2 - 9a^2 - x^2 + 3ax + ax - 3a^2 = 03ax + ax = 9a^2 - 3a^24ax = 6a^2x = 6a/4x = 3a/2
Ответ: x = 3a/2
x+3ax+3ax+3ax−3ax-3ax−3a-x+ax+ax+ax−3ax-3ax−3a=0
x2−9a2x^2 - 9a^2x2−9a2 - x2−3ax−ax+3a2x^2 - 3ax - ax + 3a^2x2−3ax−ax+3a2 = 0
x^2 - 9a^2 - x^2 + 3ax + ax - 3a^2 = 0
3ax + ax = 9a^2 - 3a^2
4ax = 6a^2
x = 6a/4
x = 3a/2
Ответ: x = 3a/2