9x^2-44x-156=0

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Solution for 9x^2-44x-156=0 equation:


Simplifying
9x2 + -44x + -156 = 0

Reorder the terms:
-156 + -44x + 9x2 = 0

Solving
-156 + -44x + 9x2 = 0

Solving for variable 'x'.

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

Divide each side by '9'.
-17.33333333 + -4.888888889x + x2 = 0

Move the constant term to the right:

Add '17.33333333' to each side of the equation.
-17.33333333 + -4.888888889x + 17.33333333 + x2 = 0 + 17.33333333

Reorder the terms:
-17.33333333 + 17.33333333 + -4.888888889x + x2 = 0 + 17.33333333

Combine like terms: -17.33333333 + 17.33333333 = 0.00000000
0.00000000 + -4.888888889x + x2 = 0 + 17.33333333
-4.888888889x + x2 = 0 + 17.33333333

Combine like terms: 0 + 17.33333333 = 17.33333333
-4.888888889x + x2 = 17.33333333

The x term is -4.888888889x.  Take half its coefficient (-2.444444445).
Square it (5.975308645) and add it to both sides.

Add '5.975308645' to each side of the equation.
-4.888888889x + 5.975308645 + x2 = 17.33333333 + 5.975308645

Reorder the terms:
5.975308645 + -4.888888889x + x2 = 17.33333333 + 5.975308645

Combine like terms: 17.33333333 + 5.975308645 = 23.308641975
5.975308645 + -4.888888889x + x2 = 23.308641975

Factor a perfect square on the left side:
(x + -2.444444445)(x + -2.444444445) = 23.308641975

Calculate the square root of the right side: 4.827902441

Break this problem into two subproblems by setting 
(x + -2.444444445) equal to 4.827902441 and -4.827902441.

Subproblem 1

x + -2.444444445 = 4.827902441 Simplifying x + -2.444444445 = 4.827902441 Reorder the terms: -2.444444445 + x = 4.827902441 Solving -2.444444445 + x = 4.827902441 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.444444445' to each side of the equation. -2.444444445 + 2.444444445 + x = 4.827902441 + 2.444444445 Combine like terms: -2.444444445 + 2.444444445 = 0.000000000 0.000000000 + x = 4.827902441 + 2.444444445 x = 4.827902441 + 2.444444445 Combine like terms: 4.827902441 + 2.444444445 = 7.272346886 x = 7.272346886 Simplifying x = 7.272346886

Subproblem 2

x + -2.444444445 = -4.827902441 Simplifying x + -2.444444445 = -4.827902441 Reorder the terms: -2.444444445 + x = -4.827902441 Solving -2.444444445 + x = -4.827902441 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.444444445' to each side of the equation. -2.444444445 + 2.444444445 + x = -4.827902441 + 2.444444445 Combine like terms: -2.444444445 + 2.444444445 = 0.000000000 0.000000000 + x = -4.827902441 + 2.444444445 x = -4.827902441 + 2.444444445 Combine like terms: -4.827902441 + 2.444444445 = -2.383457996 x = -2.383457996 Simplifying x = -2.383457996

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.272346886, -2.383457996}

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