-2=x^2+18x+81

Solution for -2=x^2+18x+81 equation:

Simplifying
-2 = x2 + 18x + 81

Reorder the terms:
-2 = 81 + 18x + x2

Solving
-2 = 81 + 18x + x2

Solving for variable 'x'.

Combine like terms: -2 + -81 = -83
-83 + -18x + -1x2 = 81 + 18x + x2 + -81 + -18x + -1x2

Reorder the terms:
-83 + -18x + -1x2 = 81 + -81 + 18x + -18x + x2 + -1x2

Combine like terms: 81 + -81 = 0
-83 + -18x + -1x2 = 0 + 18x + -18x + x2 + -1x2
-83 + -18x + -1x2 = 18x + -18x + x2 + -1x2

Combine like terms: 18x + -18x = 0
-83 + -18x + -1x2 = 0 + x2 + -1x2
-83 + -18x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-83 + -18x + -1x2 = 0

Factor out the Greatest Common Factor (GCF), '-1'.
-1(83 + 18x + x2) = 0

Ignore the factor -1.
Subproblem 1
Set the factor '(83 + 18x + x2)' equal to zero and attempt to solve:

Simplifying
83 + 18x + x2 = 0

Solving
83 + 18x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-83' to each side of the equation.
83 + 18x + -83 + x2 = 0 + -83

Reorder the terms:
83 + -83 + 18x + x2 = 0 + -83

Combine like terms: 83 + -83 = 0
0 + 18x + x2 = 0 + -83
18x + x2 = 0 + -83

Combine like terms: 0 + -83 = -83
18x + x2 = -83

The x term is 18x.  Take half its coefficient (9).
Square it (81) and add it to both sides.

Add '81' to each side of the equation.
18x + 81 + x2 = -83 + 81

Reorder the terms:
81 + 18x + x2 = -83 + 81

Combine like terms: -83 + 81 = -2
81 + 18x + x2 = -2

Factor a perfect square on the left side:
(x + 9)(x + 9) = -2

Can't calculate square root of the right side.

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.

The solution to this equation could not be determined.