x^2+18x+81=-45+18

Solution for x^2+18x+81=-45+18 equation:

Simplifying
x2 + 18x + 81 = -45 + 18

Reorder the terms:
81 + 18x + x2 = -45 + 18

Combine like terms: -45 + 18 = -27
81 + 18x + x2 = -27

Solving
81 + 18x + x2 = -27

Solving for variable 'x'.

Reorder the terms:
81 + 27 + 18x + x2 = -27 + 27

Combine like terms: 81 + 27 = 108
108 + 18x + x2 = -27 + 27

Combine like terms: -27 + 27 = 0
108 + 18x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-108' to each side of the equation.
108 + 18x + -108 + x2 = 0 + -108

Reorder the terms:
108 + -108 + 18x + x2 = 0 + -108

Combine like terms: 108 + -108 = 0
0 + 18x + x2 = 0 + -108
18x + x2 = 0 + -108

Combine like terms: 0 + -108 = -108
18x + x2 = -108

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 = -108 + 81

Reorder the terms:
81 + 18x + x2 = -108 + 81

Combine like terms: -108 + 81 = -27
81 + 18x + x2 = -27

Factor a perfect square on the left side:
(x + 9)(x + 9) = -27

Can't calculate square root of the right side.

The solution to this equation could not be determined.