Why are the equivalent expressions for 3x^2 -18x +19? Select all that apply.
A- 3(3x-3)^2 -8
B- 3(x-3)^2 +45
C- (3x^2 -6x +9)+19-9
D- (3x^2 -6x +9)+19+9
E- 3(x^2-6x+9) + 19 +27
F- 3(x^2-6x+9) + 19 -27
B- 3(x-3)^2 +45
C- (3x^2 -6x +9)+19-9
E- 3(x^2-6x+9) + 19 +27