x^2-24x+129=0

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Solution for x^2-24x+129=0 equation:


Simplifying
x2 + -24x + 129 = 0

Reorder the terms:
129 + -24x + x2 = 0

Solving
129 + -24x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-129' to each side of the equation.
129 + -24x + -129 + x2 = 0 + -129

Reorder the terms:
129 + -129 + -24x + x2 = 0 + -129

Combine like terms: 129 + -129 = 0
0 + -24x + x2 = 0 + -129
-24x + x2 = 0 + -129

Combine like terms: 0 + -129 = -129
-24x + x2 = -129

The x term is -24x.  Take half its coefficient (-12).
Square it (144) and add it to both sides.

Add '144' to each side of the equation.
-24x + 144 + x2 = -129 + 144

Reorder the terms:
144 + -24x + x2 = -129 + 144

Combine like terms: -129 + 144 = 15
144 + -24x + x2 = 15

Factor a perfect square on the left side:
(x + -12)(x + -12) = 15

Calculate the square root of the right side: 3.872983346

Break this problem into two subproblems by setting 
(x + -12) equal to 3.872983346 and -3.872983346.

Subproblem 1

x + -12 = 3.872983346 Simplifying x + -12 = 3.872983346 Reorder the terms: -12 + x = 3.872983346 Solving -12 + x = 3.872983346 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 12 + x = 3.872983346 + 12 Combine like terms: -12 + 12 = 0 0 + x = 3.872983346 + 12 x = 3.872983346 + 12 Combine like terms: 3.872983346 + 12 = 15.872983346 x = 15.872983346 Simplifying x = 15.872983346

Subproblem 2

x + -12 = -3.872983346 Simplifying x + -12 = -3.872983346 Reorder the terms: -12 + x = -3.872983346 Solving -12 + x = -3.872983346 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 12 + x = -3.872983346 + 12 Combine like terms: -12 + 12 = 0 0 + x = -3.872983346 + 12 x = -3.872983346 + 12 Combine like terms: -3.872983346 + 12 = 8.127016654 x = 8.127016654 Simplifying x = 8.127016654

Solution

The solution to the problem is based on the solutions from the subproblems. x = {15.872983346, 8.127016654}

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