3x^2+11x+18=0

Solution for 3x^2+11x+18=0 equation:

Simplifying
3x2 + 11x + 18 = 0

Reorder the terms:
18 + 11x + 3x2 = 0

Solving
18 + 11x + 3x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
3 the coefficient of the squared term: 

Divide each side by '3'.
6 + 3.666666667x + x2 = 0

Move the constant term to the right:

Add '-6' to each side of the equation.
6 + 3.666666667x + -6 + x2 = 0 + -6

Reorder the terms:
6 + -6 + 3.666666667x + x2 = 0 + -6

Combine like terms: 6 + -6 = 0
0 + 3.666666667x + x2 = 0 + -6
3.666666667x + x2 = 0 + -6

Combine like terms: 0 + -6 = -6
3.666666667x + x2 = -6

The x term is 3.666666667x.  Take half its coefficient (1.833333334).
Square it (3.361111114) and add it to both sides.

Add '3.361111114' to each side of the equation.
3.666666667x + 3.361111114 + x2 = -6 + 3.361111114

Reorder the terms:
3.361111114 + 3.666666667x + x2 = -6 + 3.361111114

Combine like terms: -6 + 3.361111114 = -2.638888886
3.361111114 + 3.666666667x + x2 = -2.638888886

Factor a perfect square on the left side:
(x + 1.833333334)(x + 1.833333334) = -2.638888886

Can't calculate square root of the right side.

The solution to this equation could not be determined.