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

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


Simplifying
2x(3 + -8x) + (x + 6) = 6x + -3
(3 * 2x + -8x * 2x) + (x + 6) = 6x + -3
(6x + -16x2) + (x + 6) = 6x + -3

Reorder the terms:
6x + -16x2 + (6 + x) = 6x + -3

Remove parenthesis around (6 + x)
6x + -16x2 + 6 + x = 6x + -3

Reorder the terms:
6 + 6x + x + -16x2 = 6x + -3

Combine like terms: 6x + x = 7x
6 + 7x + -16x2 = 6x + -3

Reorder the terms:
6 + 7x + -16x2 = -3 + 6x

Solving
6 + 7x + -16x2 = -3 + 6x

Solving for variable 'x'.

Reorder the terms:
6 + 3 + 7x + -6x + -16x2 = -3 + 6x + 3 + -6x

Combine like terms: 6 + 3 = 9
9 + 7x + -6x + -16x2 = -3 + 6x + 3 + -6x

Combine like terms: 7x + -6x = 1x
9 + 1x + -16x2 = -3 + 6x + 3 + -6x

Reorder the terms:
9 + 1x + -16x2 = -3 + 3 + 6x + -6x

Combine like terms: -3 + 3 = 0
9 + 1x + -16x2 = 0 + 6x + -6x
9 + 1x + -16x2 = 6x + -6x

Combine like terms: 6x + -6x = 0
9 + 1x + -16x2 = 0

Begin completing the square.  Divide all terms by
-16 the coefficient of the squared term: 

Divide each side by '-16'.
-0.5625 + -0.0625x + x2 = 0

Move the constant term to the right:

Add '0.5625' to each side of the equation.
-0.5625 + -0.0625x + 0.5625 + x2 = 0 + 0.5625

Reorder the terms:
-0.5625 + 0.5625 + -0.0625x + x2 = 0 + 0.5625

Combine like terms: -0.5625 + 0.5625 = 0.0000
0.0000 + -0.0625x + x2 = 0 + 0.5625
-0.0625x + x2 = 0 + 0.5625

Combine like terms: 0 + 0.5625 = 0.5625
-0.0625x + x2 = 0.5625

The x term is -0.0625x.  Take half its coefficient (-0.03125).
Square it (0.0009765625) and add it to both sides.

Add '0.0009765625' to each side of the equation.
-0.0625x + 0.0009765625 + x2 = 0.5625 + 0.0009765625

Reorder the terms:
0.0009765625 + -0.0625x + x2 = 0.5625 + 0.0009765625

Combine like terms: 0.5625 + 0.0009765625 = 0.5634765625
0.0009765625 + -0.0625x + x2 = 0.5634765625

Factor a perfect square on the left side:
(x + -0.03125)(x + -0.03125) = 0.5634765625

Calculate the square root of the right side: 0.750650759

Break this problem into two subproblems by setting 
(x + -0.03125) equal to 0.750650759 and -0.750650759.

Subproblem 1

x + -0.03125 = 0.750650759 Simplifying x + -0.03125 = 0.750650759 Reorder the terms: -0.03125 + x = 0.750650759 Solving -0.03125 + x = 0.750650759 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.03125' to each side of the equation. -0.03125 + 0.03125 + x = 0.750650759 + 0.03125 Combine like terms: -0.03125 + 0.03125 = 0.00000 0.00000 + x = 0.750650759 + 0.03125 x = 0.750650759 + 0.03125 Combine like terms: 0.750650759 + 0.03125 = 0.781900759 x = 0.781900759 Simplifying x = 0.781900759

Subproblem 2

x + -0.03125 = -0.750650759 Simplifying x + -0.03125 = -0.750650759 Reorder the terms: -0.03125 + x = -0.750650759 Solving -0.03125 + x = -0.750650759 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.03125' to each side of the equation. -0.03125 + 0.03125 + x = -0.750650759 + 0.03125 Combine like terms: -0.03125 + 0.03125 = 0.00000 0.00000 + x = -0.750650759 + 0.03125 x = -0.750650759 + 0.03125 Combine like terms: -0.750650759 + 0.03125 = -0.719400759 x = -0.719400759 Simplifying x = -0.719400759

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.781900759, -0.719400759}

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