3x-2(x+6)=4x(x-10)

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Solution for 3x-2(x+6)=4x(x-10) equation:


Simplifying
3x + -2(x + 6) = 4x(x + -10)

Reorder the terms:
3x + -2(6 + x) = 4x(x + -10)
3x + (6 * -2 + x * -2) = 4x(x + -10)
3x + (-12 + -2x) = 4x(x + -10)

Reorder the terms:
-12 + 3x + -2x = 4x(x + -10)

Combine like terms: 3x + -2x = 1x
-12 + 1x = 4x(x + -10)

Reorder the terms:
-12 + 1x = 4x(-10 + x)
-12 + 1x = (-10 * 4x + x * 4x)
-12 + 1x = (-40x + 4x2)

Solving
-12 + 1x = -40x + 4x2

Solving for variable 'x'.

Combine like terms: 1x + 40x = 41x
-12 + 41x + -4x2 = -40x + 4x2 + 40x + -4x2

Reorder the terms:
-12 + 41x + -4x2 = -40x + 40x + 4x2 + -4x2

Combine like terms: -40x + 40x = 0
-12 + 41x + -4x2 = 0 + 4x2 + -4x2
-12 + 41x + -4x2 = 4x2 + -4x2

Combine like terms: 4x2 + -4x2 = 0
-12 + 41x + -4x2 = 0

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

Divide each side by '-4'.
3 + -10.25x + x2 = 0

Move the constant term to the right:

Add '-3' to each side of the equation.
3 + -10.25x + -3 + x2 = 0 + -3

Reorder the terms:
3 + -3 + -10.25x + x2 = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -10.25x + x2 = 0 + -3
-10.25x + x2 = 0 + -3

Combine like terms: 0 + -3 = -3
-10.25x + x2 = -3

The x term is -10.25x.  Take half its coefficient (-5.125).
Square it (26.265625) and add it to both sides.

Add '26.265625' to each side of the equation.
-10.25x + 26.265625 + x2 = -3 + 26.265625

Reorder the terms:
26.265625 + -10.25x + x2 = -3 + 26.265625

Combine like terms: -3 + 26.265625 = 23.265625
26.265625 + -10.25x + x2 = 23.265625

Factor a perfect square on the left side:
(x + -5.125)(x + -5.125) = 23.265625

Calculate the square root of the right side: 4.823445345

Break this problem into two subproblems by setting 
(x + -5.125) equal to 4.823445345 and -4.823445345.

Subproblem 1

x + -5.125 = 4.823445345 Simplifying x + -5.125 = 4.823445345 Reorder the terms: -5.125 + x = 4.823445345 Solving -5.125 + x = 4.823445345 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.125' to each side of the equation. -5.125 + 5.125 + x = 4.823445345 + 5.125 Combine like terms: -5.125 + 5.125 = 0.000 0.000 + x = 4.823445345 + 5.125 x = 4.823445345 + 5.125 Combine like terms: 4.823445345 + 5.125 = 9.948445345 x = 9.948445345 Simplifying x = 9.948445345

Subproblem 2

x + -5.125 = -4.823445345 Simplifying x + -5.125 = -4.823445345 Reorder the terms: -5.125 + x = -4.823445345 Solving -5.125 + x = -4.823445345 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.125' to each side of the equation. -5.125 + 5.125 + x = -4.823445345 + 5.125 Combine like terms: -5.125 + 5.125 = 0.000 0.000 + x = -4.823445345 + 5.125 x = -4.823445345 + 5.125 Combine like terms: -4.823445345 + 5.125 = 0.301554655 x = 0.301554655 Simplifying x = 0.301554655

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.948445345, 0.301554655}

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