ОДЗ
x ≠ - 3; x ≠ 0; x ≠ 3
27(x - 3) - 2(x - 3)(x + 3) - 3(x + 3) = 0
27x - 81 - 2(x^2 - 9) - 3x - 9 = 0
27x - 81 - 2x^2 + 18 - 3x - 9 = 0
- 2x^2 + 24x - 72 = 0 /:(-2)
x^2 - 12x + 36 = 0
(x - 6)^2 = 0
x = 6
(2х-у)(3х+2у)+6у(х+у)=6х²+4ху-3ху-2у²+6ху+6у²=6х²+7ху+4у²