2x(6x-7)=4x+8-3

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Solution for 2x(6x-7)=4x+8-3 equation:


Simplifying
2x(6x + -7) = 4x + 8 + -3

Reorder the terms:
2x(-7 + 6x) = 4x + 8 + -3
(-7 * 2x + 6x * 2x) = 4x + 8 + -3
(-14x + 12x2) = 4x + 8 + -3

Reorder the terms:
-14x + 12x2 = 8 + -3 + 4x

Combine like terms: 8 + -3 = 5
-14x + 12x2 = 5 + 4x

Solving
-14x + 12x2 = 5 + 4x

Solving for variable 'x'.

Reorder the terms:
-5 + -14x + -4x + 12x2 = 5 + 4x + -5 + -4x

Combine like terms: -14x + -4x = -18x
-5 + -18x + 12x2 = 5 + 4x + -5 + -4x

Reorder the terms:
-5 + -18x + 12x2 = 5 + -5 + 4x + -4x

Combine like terms: 5 + -5 = 0
-5 + -18x + 12x2 = 0 + 4x + -4x
-5 + -18x + 12x2 = 4x + -4x

Combine like terms: 4x + -4x = 0
-5 + -18x + 12x2 = 0

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

Divide each side by '12'.
-0.4166666667 + -1.5x + x2 = 0

Move the constant term to the right:

Add '0.4166666667' to each side of the equation.
-0.4166666667 + -1.5x + 0.4166666667 + x2 = 0 + 0.4166666667

Reorder the terms:
-0.4166666667 + 0.4166666667 + -1.5x + x2 = 0 + 0.4166666667

Combine like terms: -0.4166666667 + 0.4166666667 = 0.0000000000
0.0000000000 + -1.5x + x2 = 0 + 0.4166666667
-1.5x + x2 = 0 + 0.4166666667

Combine like terms: 0 + 0.4166666667 = 0.4166666667
-1.5x + x2 = 0.4166666667

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 = 0.4166666667 + 0.5625

Reorder the terms:
0.5625 + -1.5x + x2 = 0.4166666667 + 0.5625

Combine like terms: 0.4166666667 + 0.5625 = 0.9791666667
0.5625 + -1.5x + x2 = 0.9791666667

Factor a perfect square on the left side:
(x + -0.75)(x + -0.75) = 0.9791666667

Calculate the square root of the right side: 0.989528507

Break this problem into two subproblems by setting 
(x + -0.75) equal to 0.989528507 and -0.989528507.

Subproblem 1

x + -0.75 = 0.989528507 Simplifying x + -0.75 = 0.989528507 Reorder the terms: -0.75 + x = 0.989528507 Solving -0.75 + x = 0.989528507 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = 0.989528507 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = 0.989528507 + 0.75 x = 0.989528507 + 0.75 Combine like terms: 0.989528507 + 0.75 = 1.739528507 x = 1.739528507 Simplifying x = 1.739528507

Subproblem 2

x + -0.75 = -0.989528507 Simplifying x + -0.75 = -0.989528507 Reorder the terms: -0.75 + x = -0.989528507 Solving -0.75 + x = -0.989528507 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = -0.989528507 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = -0.989528507 + 0.75 x = -0.989528507 + 0.75 Combine like terms: -0.989528507 + 0.75 = -0.239528507 x = -0.239528507 Simplifying x = -0.239528507

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.739528507, -0.239528507}

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