-7x(x-5)+x=-7(-2-x)

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Solution for -7x(x-5)+x=-7(-2-x) equation:


Simplifying
-7x(x + -5) + x = -7(-2 + -1x)

Reorder the terms:
-7x(-5 + x) + x = -7(-2 + -1x)
(-5 * -7x + x * -7x) + x = -7(-2 + -1x)
(35x + -7x2) + x = -7(-2 + -1x)

Reorder the terms:
35x + x + -7x2 = -7(-2 + -1x)

Combine like terms: 35x + x = 36x
36x + -7x2 = -7(-2 + -1x)
36x + -7x2 = (-2 * -7 + -1x * -7)
36x + -7x2 = (14 + 7x)

Solving
36x + -7x2 = 14 + 7x

Solving for variable 'x'.

Reorder the terms:
-14 + 36x + -7x + -7x2 = 14 + 7x + -14 + -7x

Combine like terms: 36x + -7x = 29x
-14 + 29x + -7x2 = 14 + 7x + -14 + -7x

Reorder the terms:
-14 + 29x + -7x2 = 14 + -14 + 7x + -7x

Combine like terms: 14 + -14 = 0
-14 + 29x + -7x2 = 0 + 7x + -7x
-14 + 29x + -7x2 = 7x + -7x

Combine like terms: 7x + -7x = 0
-14 + 29x + -7x2 = 0

Begin completing the square.  Divide all terms by
-7 the coefficient of the squared term: 

Divide each side by '-7'.
2 + -4.142857143x + x2 = 0

Move the constant term to the right:

Add '-2' to each side of the equation.
2 + -4.142857143x + -2 + x2 = 0 + -2

Reorder the terms:
2 + -2 + -4.142857143x + x2 = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -4.142857143x + x2 = 0 + -2
-4.142857143x + x2 = 0 + -2

Combine like terms: 0 + -2 = -2
-4.142857143x + x2 = -2

The x term is -4.142857143x.  Take half its coefficient (-2.071428572).
Square it (4.290816329) and add it to both sides.

Add '4.290816329' to each side of the equation.
-4.142857143x + 4.290816329 + x2 = -2 + 4.290816329

Reorder the terms:
4.290816329 + -4.142857143x + x2 = -2 + 4.290816329

Combine like terms: -2 + 4.290816329 = 2.290816329
4.290816329 + -4.142857143x + x2 = 2.290816329

Factor a perfect square on the left side:
(x + -2.071428572)(x + -2.071428572) = 2.290816329

Calculate the square root of the right side: 1.513544294

Break this problem into two subproblems by setting 
(x + -2.071428572) equal to 1.513544294 and -1.513544294.

Subproblem 1

x + -2.071428572 = 1.513544294 Simplifying x + -2.071428572 = 1.513544294 Reorder the terms: -2.071428572 + x = 1.513544294 Solving -2.071428572 + x = 1.513544294 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.071428572' to each side of the equation. -2.071428572 + 2.071428572 + x = 1.513544294 + 2.071428572 Combine like terms: -2.071428572 + 2.071428572 = 0.000000000 0.000000000 + x = 1.513544294 + 2.071428572 x = 1.513544294 + 2.071428572 Combine like terms: 1.513544294 + 2.071428572 = 3.584972866 x = 3.584972866 Simplifying x = 3.584972866

Subproblem 2

x + -2.071428572 = -1.513544294 Simplifying x + -2.071428572 = -1.513544294 Reorder the terms: -2.071428572 + x = -1.513544294 Solving -2.071428572 + x = -1.513544294 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.071428572' to each side of the equation. -2.071428572 + 2.071428572 + x = -1.513544294 + 2.071428572 Combine like terms: -2.071428572 + 2.071428572 = 0.000000000 0.000000000 + x = -1.513544294 + 2.071428572 x = -1.513544294 + 2.071428572 Combine like terms: -1.513544294 + 2.071428572 = 0.557884278 x = 0.557884278 Simplifying x = 0.557884278

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.584972866, 0.557884278}

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