x^2+x-1728=0

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Solution for x^2+x-1728=0 equation:


Simplifying
x2 + x + -1728 = 0

Reorder the terms:
-1728 + x + x2 = 0

Solving
-1728 + x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '1728' to each side of the equation.
-1728 + x + 1728 + x2 = 0 + 1728

Reorder the terms:
-1728 + 1728 + x + x2 = 0 + 1728

Combine like terms: -1728 + 1728 = 0
0 + x + x2 = 0 + 1728
x + x2 = 0 + 1728

Combine like terms: 0 + 1728 = 1728
x + x2 = 1728

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
x + 0.25 + x2 = 1728 + 0.25

Reorder the terms:
0.25 + x + x2 = 1728 + 0.25

Combine like terms: 1728 + 0.25 = 1728.25
0.25 + x + x2 = 1728.25

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 1728.25

Calculate the square root of the right side: 41.572226306

Break this problem into two subproblems by setting 
(x + 0.5) equal to 41.572226306 and -41.572226306.

Subproblem 1

x + 0.5 = 41.572226306 Simplifying x + 0.5 = 41.572226306 Reorder the terms: 0.5 + x = 41.572226306 Solving 0.5 + x = 41.572226306 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 41.572226306 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 41.572226306 + -0.5 x = 41.572226306 + -0.5 Combine like terms: 41.572226306 + -0.5 = 41.072226306 x = 41.072226306 Simplifying x = 41.072226306

Subproblem 2

x + 0.5 = -41.572226306 Simplifying x + 0.5 = -41.572226306 Reorder the terms: 0.5 + x = -41.572226306 Solving 0.5 + x = -41.572226306 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -41.572226306 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -41.572226306 + -0.5 x = -41.572226306 + -0.5 Combine like terms: -41.572226306 + -0.5 = -42.072226306 x = -42.072226306 Simplifying x = -42.072226306

Solution

The solution to the problem is based on the solutions from the subproblems. x = {41.072226306, -42.072226306}

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