x^2-1*x-2=1000

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Solution for x^2-1*x-2=1000 equation:


Simplifying
x2 + -1x + -2 = 1000

Reorder the terms:
-2 + -1x + x2 = 1000

Solving
-2 + -1x + x2 = 1000

Solving for variable 'x'.

Reorder the terms:
-2 + -1000 + -1x + x2 = 1000 + -1000

Combine like terms: -2 + -1000 = -1002
-1002 + -1x + x2 = 1000 + -1000

Combine like terms: 1000 + -1000 = 0
-1002 + -1x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '1002' to each side of the equation.
-1002 + -1x + 1002 + x2 = 0 + 1002

Reorder the terms:
-1002 + 1002 + -1x + x2 = 0 + 1002

Combine like terms: -1002 + 1002 = 0
0 + -1x + x2 = 0 + 1002
-1x + x2 = 0 + 1002

Combine like terms: 0 + 1002 = 1002
-1x + x2 = 1002

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 = 1002 + 0.25

Reorder the terms:
0.25 + -1x + x2 = 1002 + 0.25

Combine like terms: 1002 + 0.25 = 1002.25
0.25 + -1x + x2 = 1002.25

Factor a perfect square on the left side:
(x + -0.5)(x + -0.5) = 1002.25

Calculate the square root of the right side: 31.658332237

Break this problem into two subproblems by setting 
(x + -0.5) equal to 31.658332237 and -31.658332237.

Subproblem 1

x + -0.5 = 31.658332237 Simplifying x + -0.5 = 31.658332237 Reorder the terms: -0.5 + x = 31.658332237 Solving -0.5 + x = 31.658332237 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 = 31.658332237 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 31.658332237 + 0.5 x = 31.658332237 + 0.5 Combine like terms: 31.658332237 + 0.5 = 32.158332237 x = 32.158332237 Simplifying x = 32.158332237

Subproblem 2

x + -0.5 = -31.658332237 Simplifying x + -0.5 = -31.658332237 Reorder the terms: -0.5 + x = -31.658332237 Solving -0.5 + x = -31.658332237 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 = -31.658332237 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -31.658332237 + 0.5 x = -31.658332237 + 0.5 Combine like terms: -31.658332237 + 0.5 = -31.158332237 x = -31.158332237 Simplifying x = -31.158332237

Solution

The solution to the problem is based on the solutions from the subproblems. x = {32.158332237, -31.158332237}

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