(2x+1)(x+4)13=2x-10x

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Solution for (2x+1)(x+4)13=2x-10x equation:


Simplifying
(2x + 1)(x + 4) * 13 = 2x + -10x

Reorder the terms:
(1 + 2x)(x + 4) * 13 = 2x + -10x

Reorder the terms:
(1 + 2x)(4 + x) * 13 = 2x + -10x

Reorder the terms for easier multiplication:
13(1 + 2x)(4 + x) = 2x + -10x

Multiply (1 + 2x) * (4 + x)
13(1(4 + x) + 2x * (4 + x)) = 2x + -10x
13((4 * 1 + x * 1) + 2x * (4 + x)) = 2x + -10x
13((4 + 1x) + 2x * (4 + x)) = 2x + -10x
13(4 + 1x + (4 * 2x + x * 2x)) = 2x + -10x
13(4 + 1x + (8x + 2x2)) = 2x + -10x

Combine like terms: 1x + 8x = 9x
13(4 + 9x + 2x2) = 2x + -10x
(4 * 13 + 9x * 13 + 2x2 * 13) = 2x + -10x
(52 + 117x + 26x2) = 2x + -10x

Combine like terms: 2x + -10x = -8x
52 + 117x + 26x2 = -8x

Solving
52 + 117x + 26x2 = -8x

Solving for variable 'x'.

Reorder the terms:
52 + 117x + 8x + 26x2 = -8x + 8x

Combine like terms: 117x + 8x = 125x
52 + 125x + 26x2 = -8x + 8x

Combine like terms: -8x + 8x = 0
52 + 125x + 26x2 = 0

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

Divide each side by '26'.
2 + 4.807692308x + x2 = 0

Move the constant term to the right:

Add '-2' to each side of the equation.
2 + 4.807692308x + -2 + x2 = 0 + -2

Reorder the terms:
2 + -2 + 4.807692308x + x2 = 0 + -2

Combine like terms: 2 + -2 = 0
0 + 4.807692308x + x2 = 0 + -2
4.807692308x + x2 = 0 + -2

Combine like terms: 0 + -2 = -2
4.807692308x + x2 = -2

The x term is 4.807692308x.  Take half its coefficient (2.403846154).
Square it (5.778476332) and add it to both sides.

Add '5.778476332' to each side of the equation.
4.807692308x + 5.778476332 + x2 = -2 + 5.778476332

Reorder the terms:
5.778476332 + 4.807692308x + x2 = -2 + 5.778476332

Combine like terms: -2 + 5.778476332 = 3.778476332
5.778476332 + 4.807692308x + x2 = 3.778476332

Factor a perfect square on the left side:
(x + 2.403846154)(x + 2.403846154) = 3.778476332

Calculate the square root of the right side: 1.943830325

Break this problem into two subproblems by setting 
(x + 2.403846154) equal to 1.943830325 and -1.943830325.

Subproblem 1

x + 2.403846154 = 1.943830325 Simplifying x + 2.403846154 = 1.943830325 Reorder the terms: 2.403846154 + x = 1.943830325 Solving 2.403846154 + x = 1.943830325 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.403846154' to each side of the equation. 2.403846154 + -2.403846154 + x = 1.943830325 + -2.403846154 Combine like terms: 2.403846154 + -2.403846154 = 0.000000000 0.000000000 + x = 1.943830325 + -2.403846154 x = 1.943830325 + -2.403846154 Combine like terms: 1.943830325 + -2.403846154 = -0.460015829 x = -0.460015829 Simplifying x = -0.460015829

Subproblem 2

x + 2.403846154 = -1.943830325 Simplifying x + 2.403846154 = -1.943830325 Reorder the terms: 2.403846154 + x = -1.943830325 Solving 2.403846154 + x = -1.943830325 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.403846154' to each side of the equation. 2.403846154 + -2.403846154 + x = -1.943830325 + -2.403846154 Combine like terms: 2.403846154 + -2.403846154 = 0.000000000 0.000000000 + x = -1.943830325 + -2.403846154 x = -1.943830325 + -2.403846154 Combine like terms: -1.943830325 + -2.403846154 = -4.347676479 x = -4.347676479 Simplifying x = -4.347676479

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.460015829, -4.347676479}

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