x=-x^2-2x-6

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


Simplifying
x = -1x2 + -2x + -6

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

Solving
x = -6 + -2x + -1x2

Solving for variable 'x'.

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

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

Reorder the terms:
6 + 3x + x2 = -6 + 6 + -2x + 2x + -1x2 + x2

Combine like terms: -6 + 6 = 0
6 + 3x + x2 = 0 + -2x + 2x + -1x2 + x2
6 + 3x + x2 = -2x + 2x + -1x2 + x2

Combine like terms: -2x + 2x = 0
6 + 3x + x2 = 0 + -1x2 + x2
6 + 3x + x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
6 + 3x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-6' to each side of the equation.
6 + 3x + -6 + x2 = 0 + -6

Reorder the terms:
6 + -6 + 3x + x2 = 0 + -6

Combine like terms: 6 + -6 = 0
0 + 3x + x2 = 0 + -6
3x + x2 = 0 + -6

Combine like terms: 0 + -6 = -6
3x + x2 = -6

The x term is 3x.  Take half its coefficient (1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
3x + 2.25 + x2 = -6 + 2.25

Reorder the terms:
2.25 + 3x + x2 = -6 + 2.25

Combine like terms: -6 + 2.25 = -3.75
2.25 + 3x + x2 = -3.75

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = -3.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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