-10-5x-14=2x(9-x)

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Solution for -10-5x-14=2x(9-x) equation:


Simplifying
-10 + -5x + -14 = 2x(9 + -1x)

Reorder the terms:
-10 + -14 + -5x = 2x(9 + -1x)

Combine like terms: -10 + -14 = -24
-24 + -5x = 2x(9 + -1x)
-24 + -5x = (9 * 2x + -1x * 2x)
-24 + -5x = (18x + -2x2)

Solving
-24 + -5x = 18x + -2x2

Solving for variable 'x'.

Combine like terms: -5x + -18x = -23x
-24 + -23x + 2x2 = 18x + -2x2 + -18x + 2x2

Reorder the terms:
-24 + -23x + 2x2 = 18x + -18x + -2x2 + 2x2

Combine like terms: 18x + -18x = 0
-24 + -23x + 2x2 = 0 + -2x2 + 2x2
-24 + -23x + 2x2 = -2x2 + 2x2

Combine like terms: -2x2 + 2x2 = 0
-24 + -23x + 2x2 = 0

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

Divide each side by '2'.
-12 + -11.5x + x2 = 0

Move the constant term to the right:

Add '12' to each side of the equation.
-12 + -11.5x + 12 + x2 = 0 + 12

Reorder the terms:
-12 + 12 + -11.5x + x2 = 0 + 12

Combine like terms: -12 + 12 = 0
0 + -11.5x + x2 = 0 + 12
-11.5x + x2 = 0 + 12

Combine like terms: 0 + 12 = 12
-11.5x + x2 = 12

The x term is -11.5x.  Take half its coefficient (-5.75).
Square it (33.0625) and add it to both sides.

Add '33.0625' to each side of the equation.
-11.5x + 33.0625 + x2 = 12 + 33.0625

Reorder the terms:
33.0625 + -11.5x + x2 = 12 + 33.0625

Combine like terms: 12 + 33.0625 = 45.0625
33.0625 + -11.5x + x2 = 45.0625

Factor a perfect square on the left side:
(x + -5.75)(x + -5.75) = 45.0625

Calculate the square root of the right side: 6.712860791

Break this problem into two subproblems by setting 
(x + -5.75) equal to 6.712860791 and -6.712860791.

Subproblem 1

x + -5.75 = 6.712860791 Simplifying x + -5.75 = 6.712860791 Reorder the terms: -5.75 + x = 6.712860791 Solving -5.75 + x = 6.712860791 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.75' to each side of the equation. -5.75 + 5.75 + x = 6.712860791 + 5.75 Combine like terms: -5.75 + 5.75 = 0.00 0.00 + x = 6.712860791 + 5.75 x = 6.712860791 + 5.75 Combine like terms: 6.712860791 + 5.75 = 12.462860791 x = 12.462860791 Simplifying x = 12.462860791

Subproblem 2

x + -5.75 = -6.712860791 Simplifying x + -5.75 = -6.712860791 Reorder the terms: -5.75 + x = -6.712860791 Solving -5.75 + x = -6.712860791 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.75' to each side of the equation. -5.75 + 5.75 + x = -6.712860791 + 5.75 Combine like terms: -5.75 + 5.75 = 0.00 0.00 + x = -6.712860791 + 5.75 x = -6.712860791 + 5.75 Combine like terms: -6.712860791 + 5.75 = -0.962860791 x = -0.962860791 Simplifying x = -0.962860791

Solution

The solution to the problem is based on the solutions from the subproblems. x = {12.462860791, -0.962860791}

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