(x-1)*(x-1)-(x*x-4)-2*(x+1)*(x+1)=0

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Solution for (x-1)*(x-1)-(x*x-4)-2*(x+1)*(x+1)=0 equation:


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

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

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

Multiply (-1 + x) * (-1 + x)
(-1(-1 + x) + x(-1 + x)) + -1(x * x + -4) + -2(x + 1)(x + 1) = 0
((-1 * -1 + x * -1) + x(-1 + x)) + -1(x * x + -4) + -2(x + 1)(x + 1) = 0
((1 + -1x) + x(-1 + x)) + -1(x * x + -4) + -2(x + 1)(x + 1) = 0
(1 + -1x + (-1 * x + x * x)) + -1(x * x + -4) + -2(x + 1)(x + 1) = 0
(1 + -1x + (-1x + x2)) + -1(x * x + -4) + -2(x + 1)(x + 1) = 0

Combine like terms: -1x + -1x = -2x
(1 + -2x + x2) + -1(x * x + -4) + -2(x + 1)(x + 1) = 0

Multiply x * x
1 + -2x + x2 + -1(x2 + -4) + -2(x + 1)(x + 1) = 0

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

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

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

Multiply (1 + x) * (1 + x)
1 + -2x + x2 + 4 + -1x2 + -2(1(1 + x) + x(1 + x)) = 0
1 + -2x + x2 + 4 + -1x2 + -2((1 * 1 + x * 1) + x(1 + x)) = 0
1 + -2x + x2 + 4 + -1x2 + -2((1 + 1x) + x(1 + x)) = 0
1 + -2x + x2 + 4 + -1x2 + -2(1 + 1x + (1 * x + x * x)) = 0
1 + -2x + x2 + 4 + -1x2 + -2(1 + 1x + (1x + x2)) = 0

Combine like terms: 1x + 1x = 2x
1 + -2x + x2 + 4 + -1x2 + -2(1 + 2x + x2) = 0
1 + -2x + x2 + 4 + -1x2 + (1 * -2 + 2x * -2 + x2 * -2) = 0
1 + -2x + x2 + 4 + -1x2 + (-2 + -4x + -2x2) = 0

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

Combine like terms: 1 + 4 = 5
5 + -2 + -2x + -4x + x2 + -1x2 + -2x2 = 0

Combine like terms: 5 + -2 = 3
3 + -2x + -4x + x2 + -1x2 + -2x2 = 0

Combine like terms: -2x + -4x = -6x
3 + -6x + x2 + -1x2 + -2x2 = 0

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

Solving
3 + -6x + -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'.
-1.5 + 3x + x2 = 0

Move the constant term to the right:

Add '1.5' to each side of the equation.
-1.5 + 3x + 1.5 + x2 = 0 + 1.5

Reorder the terms:
-1.5 + 1.5 + 3x + x2 = 0 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + 3x + x2 = 0 + 1.5
3x + x2 = 0 + 1.5

Combine like terms: 0 + 1.5 = 1.5
3x + x2 = 1.5

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 = 1.5 + 2.25

Reorder the terms:
2.25 + 3x + x2 = 1.5 + 2.25

Combine like terms: 1.5 + 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

Calculate the square root of the right side: 1.936491673

Break this problem into two subproblems by setting 
(x + 1.5) equal to 1.936491673 and -1.936491673.

Subproblem 1

x + 1.5 = 1.936491673 Simplifying x + 1.5 = 1.936491673 Reorder the terms: 1.5 + x = 1.936491673 Solving 1.5 + x = 1.936491673 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = 1.936491673 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 1.936491673 + -1.5 x = 1.936491673 + -1.5 Combine like terms: 1.936491673 + -1.5 = 0.436491673 x = 0.436491673 Simplifying x = 0.436491673

Subproblem 2

x + 1.5 = -1.936491673 Simplifying x + 1.5 = -1.936491673 Reorder the terms: 1.5 + x = -1.936491673 Solving 1.5 + x = -1.936491673 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = -1.936491673 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -1.936491673 + -1.5 x = -1.936491673 + -1.5 Combine like terms: -1.936491673 + -1.5 = -3.436491673 x = -3.436491673 Simplifying x = -3.436491673

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.436491673, -3.436491673}

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