x^2+144x+864=0

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Solution for x^2+144x+864=0 equation:


Simplifying
x2 + 144x + 864 = 0

Reorder the terms:
864 + 144x + x2 = 0

Solving
864 + 144x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-864' to each side of the equation.
864 + 144x + -864 + x2 = 0 + -864

Reorder the terms:
864 + -864 + 144x + x2 = 0 + -864

Combine like terms: 864 + -864 = 0
0 + 144x + x2 = 0 + -864
144x + x2 = 0 + -864

Combine like terms: 0 + -864 = -864
144x + x2 = -864

The x term is 144x.  Take half its coefficient (72).
Square it (5184) and add it to both sides.

Add '5184' to each side of the equation.
144x + 5184 + x2 = -864 + 5184

Reorder the terms:
5184 + 144x + x2 = -864 + 5184

Combine like terms: -864 + 5184 = 4320
5184 + 144x + x2 = 4320

Factor a perfect square on the left side:
(x + 72)(x + 72) = 4320

Calculate the square root of the right side: 65.726706901

Break this problem into two subproblems by setting 
(x + 72) equal to 65.726706901 and -65.726706901.

Subproblem 1

x + 72 = 65.726706901 Simplifying x + 72 = 65.726706901 Reorder the terms: 72 + x = 65.726706901 Solving 72 + x = 65.726706901 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-72' to each side of the equation. 72 + -72 + x = 65.726706901 + -72 Combine like terms: 72 + -72 = 0 0 + x = 65.726706901 + -72 x = 65.726706901 + -72 Combine like terms: 65.726706901 + -72 = -6.273293099 x = -6.273293099 Simplifying x = -6.273293099

Subproblem 2

x + 72 = -65.726706901 Simplifying x + 72 = -65.726706901 Reorder the terms: 72 + x = -65.726706901 Solving 72 + x = -65.726706901 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-72' to each side of the equation. 72 + -72 + x = -65.726706901 + -72 Combine like terms: 72 + -72 = 0 0 + x = -65.726706901 + -72 x = -65.726706901 + -72 Combine like terms: -65.726706901 + -72 = -137.726706901 x = -137.726706901 Simplifying x = -137.726706901

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-6.273293099, -137.726706901}

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