Х^2 - 6X+ 9 - X^2 - 9X = - 6X
-6X+6X-9X= -9
9X=9
X=1
(x-3)^2 - x(x+9)=-6x
x^2 - 6x + 9 - x^2 - 9x = -6x
9-9x=0
9x=9
x=1
Х^2 - 6X+ 9 - X^2 - 9X = - 6X
-6X+6X-9X= -9
9X=9
X=1
(x-3)^2 - x(x+9)=-6x
x^2 - 6x + 9 - x^2 - 9x = -6x
9-9x=0
9x=9
x=1