x^2+x-254=

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Solution for x^2+x-254= equation:


Simplifying
x2 + x + -254 = 0

Reorder the terms:
-254 + x + x2 = 0

Solving
-254 + x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '254' to each side of the equation.
-254 + x + 254 + x2 = 0 + 254

Reorder the terms:
-254 + 254 + x + x2 = 0 + 254

Combine like terms: -254 + 254 = 0
0 + x + x2 = 0 + 254
x + x2 = 0 + 254

Combine like terms: 0 + 254 = 254
x + x2 = 254

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 = 254 + 0.25

Reorder the terms:
0.25 + x + x2 = 254 + 0.25

Combine like terms: 254 + 0.25 = 254.25
0.25 + x + x2 = 254.25

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 254.25

Calculate the square root of the right side: 15.945218719

Break this problem into two subproblems by setting 
(x + 0.5) equal to 15.945218719 and -15.945218719.

Subproblem 1

x + 0.5 = 15.945218719 Simplifying x + 0.5 = 15.945218719 Reorder the terms: 0.5 + x = 15.945218719 Solving 0.5 + x = 15.945218719 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 = 15.945218719 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 15.945218719 + -0.5 x = 15.945218719 + -0.5 Combine like terms: 15.945218719 + -0.5 = 15.445218719 x = 15.445218719 Simplifying x = 15.445218719

Subproblem 2

x + 0.5 = -15.945218719 Simplifying x + 0.5 = -15.945218719 Reorder the terms: 0.5 + x = -15.945218719 Solving 0.5 + x = -15.945218719 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 = -15.945218719 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -15.945218719 + -0.5 x = -15.945218719 + -0.5 Combine like terms: -15.945218719 + -0.5 = -16.445218719 x = -16.445218719 Simplifying x = -16.445218719

Solution

The solution to the problem is based on the solutions from the subproblems. x = {15.445218719, -16.445218719}

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