3x+(-4)(x+2)=14-4x(x+2)

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Solution for 3x+(-4)(x+2)=14-4x(x+2) equation:


Simplifying
3x + (-4)(x + 2) = 14 + -4x(x + 2)

Reorder the terms:
3x + -4(2 + x) = 14 + -4x(x + 2)
3x + (2 * -4 + x * -4) = 14 + -4x(x + 2)
3x + (-8 + -4x) = 14 + -4x(x + 2)

Reorder the terms:
-8 + 3x + -4x = 14 + -4x(x + 2)

Combine like terms: 3x + -4x = -1x
-8 + -1x = 14 + -4x(x + 2)

Reorder the terms:
-8 + -1x = 14 + -4x(2 + x)
-8 + -1x = 14 + (2 * -4x + x * -4x)
-8 + -1x = 14 + (-8x + -4x2)

Solving
-8 + -1x = 14 + -8x + -4x2

Solving for variable 'x'.

Reorder the terms:
-8 + -14 + -1x + 8x + 4x2 = 14 + -8x + -4x2 + -14 + 8x + 4x2

Combine like terms: -8 + -14 = -22
-22 + -1x + 8x + 4x2 = 14 + -8x + -4x2 + -14 + 8x + 4x2

Combine like terms: -1x + 8x = 7x
-22 + 7x + 4x2 = 14 + -8x + -4x2 + -14 + 8x + 4x2

Reorder the terms:
-22 + 7x + 4x2 = 14 + -14 + -8x + 8x + -4x2 + 4x2

Combine like terms: 14 + -14 = 0
-22 + 7x + 4x2 = 0 + -8x + 8x + -4x2 + 4x2
-22 + 7x + 4x2 = -8x + 8x + -4x2 + 4x2

Combine like terms: -8x + 8x = 0
-22 + 7x + 4x2 = 0 + -4x2 + 4x2
-22 + 7x + 4x2 = -4x2 + 4x2

Combine like terms: -4x2 + 4x2 = 0
-22 + 7x + 4x2 = 0

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

Divide each side by '4'.
-5.5 + 1.75x + x2 = 0

Move the constant term to the right:

Add '5.5' to each side of the equation.
-5.5 + 1.75x + 5.5 + x2 = 0 + 5.5

Reorder the terms:
-5.5 + 5.5 + 1.75x + x2 = 0 + 5.5

Combine like terms: -5.5 + 5.5 = 0.0
0.0 + 1.75x + x2 = 0 + 5.5
1.75x + x2 = 0 + 5.5

Combine like terms: 0 + 5.5 = 5.5
1.75x + x2 = 5.5

The x term is 1.75x.  Take half its coefficient (0.875).
Square it (0.765625) and add it to both sides.

Add '0.765625' to each side of the equation.
1.75x + 0.765625 + x2 = 5.5 + 0.765625

Reorder the terms:
0.765625 + 1.75x + x2 = 5.5 + 0.765625

Combine like terms: 5.5 + 0.765625 = 6.265625
0.765625 + 1.75x + x2 = 6.265625

Factor a perfect square on the left side:
(x + 0.875)(x + 0.875) = 6.265625

Calculate the square root of the right side: 2.503123049

Break this problem into two subproblems by setting 
(x + 0.875) equal to 2.503123049 and -2.503123049.

Subproblem 1

x + 0.875 = 2.503123049 Simplifying x + 0.875 = 2.503123049 Reorder the terms: 0.875 + x = 2.503123049 Solving 0.875 + x = 2.503123049 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.875' to each side of the equation. 0.875 + -0.875 + x = 2.503123049 + -0.875 Combine like terms: 0.875 + -0.875 = 0.000 0.000 + x = 2.503123049 + -0.875 x = 2.503123049 + -0.875 Combine like terms: 2.503123049 + -0.875 = 1.628123049 x = 1.628123049 Simplifying x = 1.628123049

Subproblem 2

x + 0.875 = -2.503123049 Simplifying x + 0.875 = -2.503123049 Reorder the terms: 0.875 + x = -2.503123049 Solving 0.875 + x = -2.503123049 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.875' to each side of the equation. 0.875 + -0.875 + x = -2.503123049 + -0.875 Combine like terms: 0.875 + -0.875 = 0.000 0.000 + x = -2.503123049 + -0.875 x = -2.503123049 + -0.875 Combine like terms: -2.503123049 + -0.875 = -3.378123049 x = -3.378123049 Simplifying x = -3.378123049

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.628123049, -3.378123049}

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