8x-(x+3)(4x-5)=(5+2x)(4-x)-3(x+4)

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Solution for 8x-(x+3)(4x-5)=(5+2x)(4-x)-3(x+4) equation:


Simplifying
8x + -1(x + 3)(4x + -5) = (5 + 2x)(4 + -1x) + -3(x + 4)

Reorder the terms:
8x + -1(3 + x)(4x + -5) = (5 + 2x)(4 + -1x) + -3(x + 4)

Reorder the terms:
8x + -1(3 + x)(-5 + 4x) = (5 + 2x)(4 + -1x) + -3(x + 4)

Multiply (3 + x) * (-5 + 4x)
8x + -1(3(-5 + 4x) + x(-5 + 4x)) = (5 + 2x)(4 + -1x) + -3(x + 4)
8x + -1((-5 * 3 + 4x * 3) + x(-5 + 4x)) = (5 + 2x)(4 + -1x) + -3(x + 4)
8x + -1((-15 + 12x) + x(-5 + 4x)) = (5 + 2x)(4 + -1x) + -3(x + 4)
8x + -1(-15 + 12x + (-5 * x + 4x * x)) = (5 + 2x)(4 + -1x) + -3(x + 4)
8x + -1(-15 + 12x + (-5x + 4x2)) = (5 + 2x)(4 + -1x) + -3(x + 4)

Combine like terms: 12x + -5x = 7x
8x + -1(-15 + 7x + 4x2) = (5 + 2x)(4 + -1x) + -3(x + 4)
8x + (-15 * -1 + 7x * -1 + 4x2 * -1) = (5 + 2x)(4 + -1x) + -3(x + 4)
8x + (15 + -7x + -4x2) = (5 + 2x)(4 + -1x) + -3(x + 4)

Reorder the terms:
15 + 8x + -7x + -4x2 = (5 + 2x)(4 + -1x) + -3(x + 4)

Combine like terms: 8x + -7x = 1x
15 + 1x + -4x2 = (5 + 2x)(4 + -1x) + -3(x + 4)

Multiply (5 + 2x) * (4 + -1x)
15 + 1x + -4x2 = (5(4 + -1x) + 2x * (4 + -1x)) + -3(x + 4)
15 + 1x + -4x2 = ((4 * 5 + -1x * 5) + 2x * (4 + -1x)) + -3(x + 4)
15 + 1x + -4x2 = ((20 + -5x) + 2x * (4 + -1x)) + -3(x + 4)
15 + 1x + -4x2 = (20 + -5x + (4 * 2x + -1x * 2x)) + -3(x + 4)
15 + 1x + -4x2 = (20 + -5x + (8x + -2x2)) + -3(x + 4)

Combine like terms: -5x + 8x = 3x
15 + 1x + -4x2 = (20 + 3x + -2x2) + -3(x + 4)

Reorder the terms:
15 + 1x + -4x2 = 20 + 3x + -2x2 + -3(4 + x)
15 + 1x + -4x2 = 20 + 3x + -2x2 + (4 * -3 + x * -3)
15 + 1x + -4x2 = 20 + 3x + -2x2 + (-12 + -3x)

Reorder the terms:
15 + 1x + -4x2 = 20 + -12 + 3x + -3x + -2x2

Combine like terms: 20 + -12 = 8
15 + 1x + -4x2 = 8 + 3x + -3x + -2x2

Combine like terms: 3x + -3x = 0
15 + 1x + -4x2 = 8 + 0 + -2x2
15 + 1x + -4x2 = 8 + -2x2

Solving
15 + 1x + -4x2 = 8 + -2x2

Solving for variable 'x'.

Reorder the terms:
15 + -8 + 1x + -4x2 + 2x2 = 8 + -2x2 + -8 + 2x2

Combine like terms: 15 + -8 = 7
7 + 1x + -4x2 + 2x2 = 8 + -2x2 + -8 + 2x2

Combine like terms: -4x2 + 2x2 = -2x2
7 + 1x + -2x2 = 8 + -2x2 + -8 + 2x2

Reorder the terms:
7 + 1x + -2x2 = 8 + -8 + -2x2 + 2x2

Combine like terms: 8 + -8 = 0
7 + 1x + -2x2 = 0 + -2x2 + 2x2
7 + 1x + -2x2 = -2x2 + 2x2

Combine like terms: -2x2 + 2x2 = 0
7 + 1x + -2x2 = 0

Begin completing the square.  Divide all terms by
-2 the coefficient of the squared term: 

Divide each side by '-2'.
-3.5 + -0.5x + x2 = 0

Move the constant term to the right:

Add '3.5' to each side of the equation.
-3.5 + -0.5x + 3.5 + x2 = 0 + 3.5

Reorder the terms:
-3.5 + 3.5 + -0.5x + x2 = 0 + 3.5

Combine like terms: -3.5 + 3.5 = 0.0
0.0 + -0.5x + x2 = 0 + 3.5
-0.5x + x2 = 0 + 3.5

Combine like terms: 0 + 3.5 = 3.5
-0.5x + x2 = 3.5

The x term is -0.5x.  Take half its coefficient (-0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
-0.5x + 0.0625 + x2 = 3.5 + 0.0625

Reorder the terms:
0.0625 + -0.5x + x2 = 3.5 + 0.0625

Combine like terms: 3.5 + 0.0625 = 3.5625
0.0625 + -0.5x + x2 = 3.5625

Factor a perfect square on the left side:
(x + -0.25)(x + -0.25) = 3.5625

Calculate the square root of the right side: 1.887458609

Break this problem into two subproblems by setting 
(x + -0.25) equal to 1.887458609 and -1.887458609.

Subproblem 1

x + -0.25 = 1.887458609 Simplifying x + -0.25 = 1.887458609 Reorder the terms: -0.25 + x = 1.887458609 Solving -0.25 + x = 1.887458609 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + x = 1.887458609 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = 1.887458609 + 0.25 x = 1.887458609 + 0.25 Combine like terms: 1.887458609 + 0.25 = 2.137458609 x = 2.137458609 Simplifying x = 2.137458609

Subproblem 2

x + -0.25 = -1.887458609 Simplifying x + -0.25 = -1.887458609 Reorder the terms: -0.25 + x = -1.887458609 Solving -0.25 + x = -1.887458609 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + x = -1.887458609 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = -1.887458609 + 0.25 x = -1.887458609 + 0.25 Combine like terms: -1.887458609 + 0.25 = -1.637458609 x = -1.637458609 Simplifying x = -1.637458609

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.137458609, -1.637458609}

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