-4(x+2)x=2(x+2)-12-5x

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Solution for -4(x+2)x=2(x+2)-12-5x equation:


Simplifying
-4(x + 2) * x = 2(x + 2) + -12 + -5x

Reorder the terms:
-4(2 + x) * x = 2(x + 2) + -12 + -5x

Reorder the terms for easier multiplication:
-4x(2 + x) = 2(x + 2) + -12 + -5x
(2 * -4x + x * -4x) = 2(x + 2) + -12 + -5x
(-8x + -4x2) = 2(x + 2) + -12 + -5x

Reorder the terms:
-8x + -4x2 = 2(2 + x) + -12 + -5x
-8x + -4x2 = (2 * 2 + x * 2) + -12 + -5x
-8x + -4x2 = (4 + 2x) + -12 + -5x

Reorder the terms:
-8x + -4x2 = 4 + -12 + 2x + -5x

Combine like terms: 4 + -12 = -8
-8x + -4x2 = -8 + 2x + -5x

Combine like terms: 2x + -5x = -3x
-8x + -4x2 = -8 + -3x

Solving
-8x + -4x2 = -8 + -3x

Solving for variable 'x'.

Reorder the terms:
8 + -8x + 3x + -4x2 = -8 + -3x + 8 + 3x

Combine like terms: -8x + 3x = -5x
8 + -5x + -4x2 = -8 + -3x + 8 + 3x

Reorder the terms:
8 + -5x + -4x2 = -8 + 8 + -3x + 3x

Combine like terms: -8 + 8 = 0
8 + -5x + -4x2 = 0 + -3x + 3x
8 + -5x + -4x2 = -3x + 3x

Combine like terms: -3x + 3x = 0
8 + -5x + -4x2 = 0

Begin completing the square.  Divide all terms by
-4 the coefficient of the squared term: 

Divide each side by '-4'.
-2 + 1.25x + x2 = 0

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + 1.25x + 2 + x2 = 0 + 2

Reorder the terms:
-2 + 2 + 1.25x + x2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + 1.25x + x2 = 0 + 2
1.25x + x2 = 0 + 2

Combine like terms: 0 + 2 = 2
1.25x + x2 = 2

The x term is 1.25x.  Take half its coefficient (0.625).
Square it (0.390625) and add it to both sides.

Add '0.390625' to each side of the equation.
1.25x + 0.390625 + x2 = 2 + 0.390625

Reorder the terms:
0.390625 + 1.25x + x2 = 2 + 0.390625

Combine like terms: 2 + 0.390625 = 2.390625
0.390625 + 1.25x + x2 = 2.390625

Factor a perfect square on the left side:
(x + 0.625)(x + 0.625) = 2.390625

Calculate the square root of the right side: 1.54616461

Break this problem into two subproblems by setting 
(x + 0.625) equal to 1.54616461 and -1.54616461.

Subproblem 1

x + 0.625 = 1.54616461 Simplifying x + 0.625 = 1.54616461 Reorder the terms: 0.625 + x = 1.54616461 Solving 0.625 + x = 1.54616461 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.625' to each side of the equation. 0.625 + -0.625 + x = 1.54616461 + -0.625 Combine like terms: 0.625 + -0.625 = 0.000 0.000 + x = 1.54616461 + -0.625 x = 1.54616461 + -0.625 Combine like terms: 1.54616461 + -0.625 = 0.92116461 x = 0.92116461 Simplifying x = 0.92116461

Subproblem 2

x + 0.625 = -1.54616461 Simplifying x + 0.625 = -1.54616461 Reorder the terms: 0.625 + x = -1.54616461 Solving 0.625 + x = -1.54616461 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.625' to each side of the equation. 0.625 + -0.625 + x = -1.54616461 + -0.625 Combine like terms: 0.625 + -0.625 = 0.000 0.000 + x = -1.54616461 + -0.625 x = -1.54616461 + -0.625 Combine like terms: -1.54616461 + -0.625 = -2.17116461 x = -2.17116461 Simplifying x = -2.17116461

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.92116461, -2.17116461}

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