3x^2-3x-3x+6=x^2-x

Solution for 3x^2-3x-3x+6=x^2-x equation:

Simplifying
3x2 + -3x + -3x + 6 = x2 + -1x

Reorder the terms:
6 + -3x + -3x + 3x2 = x2 + -1x

Combine like terms: -3x + -3x = -6x
6 + -6x + 3x2 = x2 + -1x

Reorder the terms:
6 + -6x + 3x2 = -1x + x2

Solving
6 + -6x + 3x2 = -1x + x2

Solving for variable 'x'.

Reorder the terms:
6 + -6x + x + 3x2 + -1x2 = -1x + x2 + x + -1x2

Combine like terms: -6x + x = -5x
6 + -5x + 3x2 + -1x2 = -1x + x2 + x + -1x2

Combine like terms: 3x2 + -1x2 = 2x2
6 + -5x + 2x2 = -1x + x2 + x + -1x2

Reorder the terms:
6 + -5x + 2x2 = -1x + x + x2 + -1x2

Combine like terms: -1x + x = 0
6 + -5x + 2x2 = 0 + x2 + -1x2
6 + -5x + 2x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
6 + -5x + 2x2 = 0

Begin completing the square.  Divide all terms by
2 the coefficient of the squared term: 

Divide each side by '2'.
3 + -2.5x + x2 = 0

Move the constant term to the right:

Add '-3' to each side of the equation.
3 + -2.5x + -3 + x2 = 0 + -3

Reorder the terms:
3 + -3 + -2.5x + x2 = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -2.5x + x2 = 0 + -3
-2.5x + x2 = 0 + -3

Combine like terms: 0 + -3 = -3
-2.5x + x2 = -3

The x term is -2.5x.  Take half its coefficient (-1.25).
Square it (1.5625) and add it to both sides.

Add '1.5625' to each side of the equation.
-2.5x + 1.5625 + x2 = -3 + 1.5625

Reorder the terms:
1.5625 + -2.5x + x2 = -3 + 1.5625

Combine like terms: -3 + 1.5625 = -1.4375
1.5625 + -2.5x + x2 = -1.4375

Factor a perfect square on the left side:
(x + -1.25)(x + -1.25) = -1.4375

Can't calculate square root of the right side.

The solution to this equation could not be determined.