x^2-x-10206=0

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Solution for x^2-x-10206=0 equation:


Simplifying
x2 + -1x + -10206 = 0

Reorder the terms:
-10206 + -1x + x2 = 0

Solving
-10206 + -1x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '10206' to each side of the equation.
-10206 + -1x + 10206 + x2 = 0 + 10206

Reorder the terms:
-10206 + 10206 + -1x + x2 = 0 + 10206

Combine like terms: -10206 + 10206 = 0
0 + -1x + x2 = 0 + 10206
-1x + x2 = 0 + 10206

Combine like terms: 0 + 10206 = 10206
-1x + x2 = 10206

The x term is -1x.  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.
-1x + 0.25 + x2 = 10206 + 0.25

Reorder the terms:
0.25 + -1x + x2 = 10206 + 0.25

Combine like terms: 10206 + 0.25 = 10206.25
0.25 + -1x + x2 = 10206.25

Factor a perfect square on the left side:
(x + -0.5)(x + -0.5) = 10206.25

Calculate the square root of the right side: 101.025986756

Break this problem into two subproblems by setting 
(x + -0.5) equal to 101.025986756 and -101.025986756.

Subproblem 1

x + -0.5 = 101.025986756 Simplifying x + -0.5 = 101.025986756 Reorder the terms: -0.5 + x = 101.025986756 Solving -0.5 + x = 101.025986756 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 = 101.025986756 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 101.025986756 + 0.5 x = 101.025986756 + 0.5 Combine like terms: 101.025986756 + 0.5 = 101.525986756 x = 101.525986756 Simplifying x = 101.525986756

Subproblem 2

x + -0.5 = -101.025986756 Simplifying x + -0.5 = -101.025986756 Reorder the terms: -0.5 + x = -101.025986756 Solving -0.5 + x = -101.025986756 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 = -101.025986756 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -101.025986756 + 0.5 x = -101.025986756 + 0.5 Combine like terms: -101.025986756 + 0.5 = -100.525986756 x = -100.525986756 Simplifying x = -100.525986756

Solution

The solution to the problem is based on the solutions from the subproblems. x = {101.525986756, -100.525986756}

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