(x^2+4)-(x-4)+(x^2-2x)=0

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Solution for (x^2+4)-(x-4)+(x^2-2x)=0 equation:


Simplifying
(x2 + 4) + -1(x + -4) + (x2 + -2x) = 0

Reorder the terms:
(4 + x2) + -1(x + -4) + (x2 + -2x) = 0

Remove parenthesis around (4 + x2)
4 + x2 + -1(x + -4) + (x2 + -2x) = 0

Reorder the terms:
4 + x2 + -1(-4 + x) + (x2 + -2x) = 0
4 + x2 + (-4 * -1 + x * -1) + (x2 + -2x) = 0
4 + x2 + (4 + -1x) + (x2 + -2x) = 0

Reorder the terms:
4 + x2 + 4 + -1x + (-2x + x2) = 0

Remove parenthesis around (-2x + x2)
4 + x2 + 4 + -1x + -2x + x2 = 0

Reorder the terms:
4 + 4 + -1x + -2x + x2 + x2 = 0

Combine like terms: 4 + 4 = 8
8 + -1x + -2x + x2 + x2 = 0

Combine like terms: -1x + -2x = -3x
8 + -3x + x2 + x2 = 0

Combine like terms: x2 + x2 = 2x2
8 + -3x + 2x2 = 0

Solving
8 + -3x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
4 + -1.5x + x2 = 0

Move the constant term to the right:

Add '-4' to each side of the equation.
4 + -1.5x + -4 + x2 = 0 + -4

Reorder the terms:
4 + -4 + -1.5x + x2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -1.5x + x2 = 0 + -4
-1.5x + x2 = 0 + -4

Combine like terms: 0 + -4 = -4
-1.5x + x2 = -4

The x term is -1.5x.  Take half its coefficient (-0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
-1.5x + 0.5625 + x2 = -4 + 0.5625

Reorder the terms:
0.5625 + -1.5x + x2 = -4 + 0.5625

Combine like terms: -4 + 0.5625 = -3.4375
0.5625 + -1.5x + x2 = -3.4375

Factor a perfect square on the left side:
(x + -0.75)(x + -0.75) = -3.4375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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