x^2-x-12.01=0

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Solution for x^2-x-12.01=0 equation:


Simplifying
x2 + -1x + -12.01 = 0

Reorder the terms:
-12.01 + -1x + x2 = 0

Solving
-12.01 + -1x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '12.01' to each side of the equation.
-12.01 + -1x + 12.01 + x2 = 0 + 12.01

Reorder the terms:
-12.01 + 12.01 + -1x + x2 = 0 + 12.01

Combine like terms: -12.01 + 12.01 = 0.00
0.00 + -1x + x2 = 0 + 12.01
-1x + x2 = 0 + 12.01

Combine like terms: 0 + 12.01 = 12.01
-1x + x2 = 12.01

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 = 12.01 + 0.25

Reorder the terms:
0.25 + -1x + x2 = 12.01 + 0.25

Combine like terms: 12.01 + 0.25 = 12.26
0.25 + -1x + x2 = 12.26

Factor a perfect square on the left side:
(x + -0.5)(x + -0.5) = 12.26

Calculate the square root of the right side: 3.50142828

Break this problem into two subproblems by setting 
(x + -0.5) equal to 3.50142828 and -3.50142828.

Subproblem 1

x + -0.5 = 3.50142828 Simplifying x + -0.5 = 3.50142828 Reorder the terms: -0.5 + x = 3.50142828 Solving -0.5 + x = 3.50142828 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 = 3.50142828 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 3.50142828 + 0.5 x = 3.50142828 + 0.5 Combine like terms: 3.50142828 + 0.5 = 4.00142828 x = 4.00142828 Simplifying x = 4.00142828

Subproblem 2

x + -0.5 = -3.50142828 Simplifying x + -0.5 = -3.50142828 Reorder the terms: -0.5 + x = -3.50142828 Solving -0.5 + x = -3.50142828 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 = -3.50142828 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -3.50142828 + 0.5 x = -3.50142828 + 0.5 Combine like terms: -3.50142828 + 0.5 = -3.00142828 x = -3.00142828 Simplifying x = -3.00142828

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.00142828, -3.00142828}

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