Question

x²(x-3)-2x(x-3)+(x-3)

Answer 1

$x^2(x-3)-2x(x-3)+(x-3)=\ (x-3)(x^2-2x+1)=(x-3)(x-1)^2$

Answer 2

x²(x-3)-2x(x-3)+(x-3)=(x-3)(x²-2x+1)=(x-3)(x-1)²=(x-3)(x-1)(x-1)