4+13x(2-3x)=6x-14(3x+12)

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Solution for 4+13x(2-3x)=6x-14(3x+12) equation:


Simplifying
4 + 13x(2 + -3x) = 6x + -14(3x + 12)
4 + (2 * 13x + -3x * 13x) = 6x + -14(3x + 12)
4 + (26x + -39x2) = 6x + -14(3x + 12)

Reorder the terms:
4 + 26x + -39x2 = 6x + -14(12 + 3x)
4 + 26x + -39x2 = 6x + (12 * -14 + 3x * -14)
4 + 26x + -39x2 = 6x + (-168 + -42x)

Reorder the terms:
4 + 26x + -39x2 = -168 + 6x + -42x

Combine like terms: 6x + -42x = -36x
4 + 26x + -39x2 = -168 + -36x

Solving
4 + 26x + -39x2 = -168 + -36x

Solving for variable 'x'.

Reorder the terms:
4 + 168 + 26x + 36x + -39x2 = -168 + -36x + 168 + 36x

Combine like terms: 4 + 168 = 172
172 + 26x + 36x + -39x2 = -168 + -36x + 168 + 36x

Combine like terms: 26x + 36x = 62x
172 + 62x + -39x2 = -168 + -36x + 168 + 36x

Reorder the terms:
172 + 62x + -39x2 = -168 + 168 + -36x + 36x

Combine like terms: -168 + 168 = 0
172 + 62x + -39x2 = 0 + -36x + 36x
172 + 62x + -39x2 = -36x + 36x

Combine like terms: -36x + 36x = 0
172 + 62x + -39x2 = 0

Begin completing the square.  Divide all terms by
-39 the coefficient of the squared term: 

Divide each side by '-39'.
-4.41025641 + -1.58974359x + x2 = 0

Move the constant term to the right:

Add '4.41025641' to each side of the equation.
-4.41025641 + -1.58974359x + 4.41025641 + x2 = 0 + 4.41025641

Reorder the terms:
-4.41025641 + 4.41025641 + -1.58974359x + x2 = 0 + 4.41025641

Combine like terms: -4.41025641 + 4.41025641 = 0.00000000
0.00000000 + -1.58974359x + x2 = 0 + 4.41025641
-1.58974359x + x2 = 0 + 4.41025641

Combine like terms: 0 + 4.41025641 = 4.41025641
-1.58974359x + x2 = 4.41025641

The x term is -1.58974359x.  Take half its coefficient (-0.794871795).
Square it (0.6318211705) and add it to both sides.

Add '0.6318211705' to each side of the equation.
-1.58974359x + 0.6318211705 + x2 = 4.41025641 + 0.6318211705

Reorder the terms:
0.6318211705 + -1.58974359x + x2 = 4.41025641 + 0.6318211705

Combine like terms: 4.41025641 + 0.6318211705 = 5.0420775805
0.6318211705 + -1.58974359x + x2 = 5.0420775805

Factor a perfect square on the left side:
(x + -0.794871795)(x + -0.794871795) = 5.0420775805

Calculate the square root of the right side: 2.245457098

Break this problem into two subproblems by setting 
(x + -0.794871795) equal to 2.245457098 and -2.245457098.

Subproblem 1

x + -0.794871795 = 2.245457098 Simplifying x + -0.794871795 = 2.245457098 Reorder the terms: -0.794871795 + x = 2.245457098 Solving -0.794871795 + x = 2.245457098 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.794871795' to each side of the equation. -0.794871795 + 0.794871795 + x = 2.245457098 + 0.794871795 Combine like terms: -0.794871795 + 0.794871795 = 0.000000000 0.000000000 + x = 2.245457098 + 0.794871795 x = 2.245457098 + 0.794871795 Combine like terms: 2.245457098 + 0.794871795 = 3.040328893 x = 3.040328893 Simplifying x = 3.040328893

Subproblem 2

x + -0.794871795 = -2.245457098 Simplifying x + -0.794871795 = -2.245457098 Reorder the terms: -0.794871795 + x = -2.245457098 Solving -0.794871795 + x = -2.245457098 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.794871795' to each side of the equation. -0.794871795 + 0.794871795 + x = -2.245457098 + 0.794871795 Combine like terms: -0.794871795 + 0.794871795 = 0.000000000 0.000000000 + x = -2.245457098 + 0.794871795 x = -2.245457098 + 0.794871795 Combine like terms: -2.245457098 + 0.794871795 = -1.450585303 x = -1.450585303 Simplifying x = -1.450585303

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.040328893, -1.450585303}

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