x^2+x+11666.6=0

Solution for x^2+x+11666.6=0 equation:

Simplifying
x2 + x + 11666.6 = 0

Reorder the terms:
11666.6 + x + x2 = 0

Solving
11666.6 + x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-11666.6' to each side of the equation.
11666.6 + x + -11666.6 + x2 = 0 + -11666.6

Reorder the terms:
11666.6 + -11666.6 + x + x2 = 0 + -11666.6

Combine like terms: 11666.6 + -11666.6 = 0.0
0.0 + x + x2 = 0 + -11666.6
x + x2 = 0 + -11666.6

Combine like terms: 0 + -11666.6 = -11666.6
x + x2 = -11666.6

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 = -11666.6 + 0.25

Reorder the terms:
0.25 + x + x2 = -11666.6 + 0.25

Combine like terms: -11666.6 + 0.25 = -11666.35
0.25 + x + x2 = -11666.35

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = -11666.35

Can't calculate square root of the right side.

The solution to this equation could not be determined.