9x^2-24x+144=131

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Solution for 9x^2-24x+144=131 equation:


Simplifying
9x2 + -24x + 144 = 131

Reorder the terms:
144 + -24x + 9x2 = 131

Solving
144 + -24x + 9x2 = 131

Solving for variable 'x'.

Reorder the terms:
144 + -131 + -24x + 9x2 = 131 + -131

Combine like terms: 144 + -131 = 13
13 + -24x + 9x2 = 131 + -131

Combine like terms: 131 + -131 = 0
13 + -24x + 9x2 = 0

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

Divide each side by '9'.
1.444444444 + -2.666666667x + x2 = 0

Move the constant term to the right:

Add '-1.444444444' to each side of the equation.
1.444444444 + -2.666666667x + -1.444444444 + x2 = 0 + -1.444444444

Reorder the terms:
1.444444444 + -1.444444444 + -2.666666667x + x2 = 0 + -1.444444444

Combine like terms: 1.444444444 + -1.444444444 = 0.000000000
0.000000000 + -2.666666667x + x2 = 0 + -1.444444444
-2.666666667x + x2 = 0 + -1.444444444

Combine like terms: 0 + -1.444444444 = -1.444444444
-2.666666667x + x2 = -1.444444444

The x term is -2.666666667x.  Take half its coefficient (-1.333333334).
Square it (1.777777780) and add it to both sides.

Add '1.777777780' to each side of the equation.
-2.666666667x + 1.777777780 + x2 = -1.444444444 + 1.777777780

Reorder the terms:
1.777777780 + -2.666666667x + x2 = -1.444444444 + 1.777777780

Combine like terms: -1.444444444 + 1.777777780 = 0.333333336
1.777777780 + -2.666666667x + x2 = 0.333333336

Factor a perfect square on the left side:
(x + -1.333333334)(x + -1.333333334) = 0.333333336

Calculate the square root of the right side: 0.577350271

Break this problem into two subproblems by setting 
(x + -1.333333334) equal to 0.577350271 and -0.577350271.

Subproblem 1

x + -1.333333334 = 0.577350271 Simplifying x + -1.333333334 = 0.577350271 Reorder the terms: -1.333333334 + x = 0.577350271 Solving -1.333333334 + x = 0.577350271 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.333333334' to each side of the equation. -1.333333334 + 1.333333334 + x = 0.577350271 + 1.333333334 Combine like terms: -1.333333334 + 1.333333334 = 0.000000000 0.000000000 + x = 0.577350271 + 1.333333334 x = 0.577350271 + 1.333333334 Combine like terms: 0.577350271 + 1.333333334 = 1.910683605 x = 1.910683605 Simplifying x = 1.910683605

Subproblem 2

x + -1.333333334 = -0.577350271 Simplifying x + -1.333333334 = -0.577350271 Reorder the terms: -1.333333334 + x = -0.577350271 Solving -1.333333334 + x = -0.577350271 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.333333334' to each side of the equation. -1.333333334 + 1.333333334 + x = -0.577350271 + 1.333333334 Combine like terms: -1.333333334 + 1.333333334 = 0.000000000 0.000000000 + x = -0.577350271 + 1.333333334 x = -0.577350271 + 1.333333334 Combine like terms: -0.577350271 + 1.333333334 = 0.755983063 x = 0.755983063 Simplifying x = 0.755983063

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.910683605, 0.755983063}

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