3x-2(5x-4)=4x(-2x-26)

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Solution for 3x-2(5x-4)=4x(-2x-26) equation:


Simplifying
3x + -2(5x + -4) = 4x(-2x + -26)

Reorder the terms:
3x + -2(-4 + 5x) = 4x(-2x + -26)
3x + (-4 * -2 + 5x * -2) = 4x(-2x + -26)
3x + (8 + -10x) = 4x(-2x + -26)

Reorder the terms:
8 + 3x + -10x = 4x(-2x + -26)

Combine like terms: 3x + -10x = -7x
8 + -7x = 4x(-2x + -26)

Reorder the terms:
8 + -7x = 4x(-26 + -2x)
8 + -7x = (-26 * 4x + -2x * 4x)
8 + -7x = (-104x + -8x2)

Solving
8 + -7x = -104x + -8x2

Solving for variable 'x'.

Combine like terms: -7x + 104x = 97x
8 + 97x + 8x2 = -104x + -8x2 + 104x + 8x2

Reorder the terms:
8 + 97x + 8x2 = -104x + 104x + -8x2 + 8x2

Combine like terms: -104x + 104x = 0
8 + 97x + 8x2 = 0 + -8x2 + 8x2
8 + 97x + 8x2 = -8x2 + 8x2

Combine like terms: -8x2 + 8x2 = 0
8 + 97x + 8x2 = 0

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

Divide each side by '8'.
1 + 12.125x + x2 = 0

Move the constant term to the right:

Add '-1' to each side of the equation.
1 + 12.125x + -1 + x2 = 0 + -1

Reorder the terms:
1 + -1 + 12.125x + x2 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + 12.125x + x2 = 0 + -1
12.125x + x2 = 0 + -1

Combine like terms: 0 + -1 = -1
12.125x + x2 = -1

The x term is 12.125x.  Take half its coefficient (6.0625).
Square it (36.75390625) and add it to both sides.

Add '36.75390625' to each side of the equation.
12.125x + 36.75390625 + x2 = -1 + 36.75390625

Reorder the terms:
36.75390625 + 12.125x + x2 = -1 + 36.75390625

Combine like terms: -1 + 36.75390625 = 35.75390625
36.75390625 + 12.125x + x2 = 35.75390625

Factor a perfect square on the left side:
(x + 6.0625)(x + 6.0625) = 35.75390625

Calculate the square root of the right side: 5.97945702

Break this problem into two subproblems by setting 
(x + 6.0625) equal to 5.97945702 and -5.97945702.

Subproblem 1

x + 6.0625 = 5.97945702 Simplifying x + 6.0625 = 5.97945702 Reorder the terms: 6.0625 + x = 5.97945702 Solving 6.0625 + x = 5.97945702 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6.0625' to each side of the equation. 6.0625 + -6.0625 + x = 5.97945702 + -6.0625 Combine like terms: 6.0625 + -6.0625 = 0.0000 0.0000 + x = 5.97945702 + -6.0625 x = 5.97945702 + -6.0625 Combine like terms: 5.97945702 + -6.0625 = -0.08304298 x = -0.08304298 Simplifying x = -0.08304298

Subproblem 2

x + 6.0625 = -5.97945702 Simplifying x + 6.0625 = -5.97945702 Reorder the terms: 6.0625 + x = -5.97945702 Solving 6.0625 + x = -5.97945702 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6.0625' to each side of the equation. 6.0625 + -6.0625 + x = -5.97945702 + -6.0625 Combine like terms: 6.0625 + -6.0625 = 0.0000 0.0000 + x = -5.97945702 + -6.0625 x = -5.97945702 + -6.0625 Combine like terms: -5.97945702 + -6.0625 = -12.04195702 x = -12.04195702 Simplifying x = -12.04195702

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.08304298, -12.04195702}

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