-2x+12=-x(2x+3)

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Solution for -2x+12=-x(2x+3) equation:


Simplifying
-2x + 12 = -1x(2x + 3)

Reorder the terms:
12 + -2x = -1x(2x + 3)

Reorder the terms:
12 + -2x = -1x(3 + 2x)
12 + -2x = (3 * -1x + 2x * -1x)
12 + -2x = (-3x + -2x2)

Solving
12 + -2x = -3x + -2x2

Solving for variable 'x'.

Combine like terms: -2x + 3x = 1x
12 + 1x + 2x2 = -3x + -2x2 + 3x + 2x2

Reorder the terms:
12 + 1x + 2x2 = -3x + 3x + -2x2 + 2x2

Combine like terms: -3x + 3x = 0
12 + 1x + 2x2 = 0 + -2x2 + 2x2
12 + 1x + 2x2 = -2x2 + 2x2

Combine like terms: -2x2 + 2x2 = 0
12 + 1x + 2x2 = 0

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

Divide each side by '2'.
6 + 0.5x + x2 = 0

Move the constant term to the right:

Add '-6' to each side of the equation.
6 + 0.5x + -6 + x2 = 0 + -6

Reorder the terms:
6 + -6 + 0.5x + x2 = 0 + -6

Combine like terms: 6 + -6 = 0
0 + 0.5x + x2 = 0 + -6
0.5x + x2 = 0 + -6

Combine like terms: 0 + -6 = -6
0.5x + x2 = -6

The x term is 0.5x.  Take half its coefficient (0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
0.5x + 0.0625 + x2 = -6 + 0.0625

Reorder the terms:
0.0625 + 0.5x + x2 = -6 + 0.0625

Combine like terms: -6 + 0.0625 = -5.9375
0.0625 + 0.5x + x2 = -5.9375

Factor a perfect square on the left side:
(x + 0.25)(x + 0.25) = -5.9375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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