9x^2+23x+16=0

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Solution for 9x^2+23x+16=0 equation:


Simplifying
9x2 + 23x + 16 = 0

Reorder the terms:
16 + 23x + 9x2 = 0

Solving
16 + 23x + 9x2 = 0

Solving for variable 'x'.

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

Divide each side by '9'.
1.777777778 + 2.555555556x + x2 = 0

Move the constant term to the right:

Add '-1.777777778' to each side of the equation.
1.777777778 + 2.555555556x + -1.777777778 + x2 = 0 + -1.777777778

Reorder the terms:
1.777777778 + -1.777777778 + 2.555555556x + x2 = 0 + -1.777777778

Combine like terms: 1.777777778 + -1.777777778 = 0.000000000
0.000000000 + 2.555555556x + x2 = 0 + -1.777777778
2.555555556x + x2 = 0 + -1.777777778

Combine like terms: 0 + -1.777777778 = -1.777777778
2.555555556x + x2 = -1.777777778

The x term is 2.555555556x.  Take half its coefficient (1.277777778).
Square it (1.632716050) and add it to both sides.

Add '1.632716050' to each side of the equation.
2.555555556x + 1.632716050 + x2 = -1.777777778 + 1.632716050

Reorder the terms:
1.632716050 + 2.555555556x + x2 = -1.777777778 + 1.632716050

Combine like terms: -1.777777778 + 1.632716050 = -0.145061728
1.632716050 + 2.555555556x + x2 = -0.145061728

Factor a perfect square on the left side:
(x + 1.277777778)(x + 1.277777778) = -0.145061728

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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