9x^2+12x+16=0

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Solution for 9x^2+12x+16=0 equation:


Simplifying
9x2 + 12x + 16 = 0

Reorder the terms:
16 + 12x + 9x2 = 0

Solving
16 + 12x + 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 + 1.333333333x + x2 = 0

Move the constant term to the right:

Add '-1.777777778' to each side of the equation.
1.777777778 + 1.333333333x + -1.777777778 + x2 = 0 + -1.777777778

Reorder the terms:
1.777777778 + -1.777777778 + 1.333333333x + x2 = 0 + -1.777777778

Combine like terms: 1.777777778 + -1.777777778 = 0.000000000
0.000000000 + 1.333333333x + x2 = 0 + -1.777777778
1.333333333x + x2 = 0 + -1.777777778

Combine like terms: 0 + -1.777777778 = -1.777777778
1.333333333x + x2 = -1.777777778

The x term is 1.333333333x.  Take half its coefficient (0.6666666665).
Square it (0.4444444442) and add it to both sides.

Add '0.4444444442' to each side of the equation.
1.333333333x + 0.4444444442 + x2 = -1.777777778 + 0.4444444442

Reorder the terms:
0.4444444442 + 1.333333333x + x2 = -1.777777778 + 0.4444444442

Combine like terms: -1.777777778 + 0.4444444442 = -1.3333333338
0.4444444442 + 1.333333333x + x2 = -1.3333333338

Factor a perfect square on the left side:
(x + 0.6666666665)(x + 0.6666666665) = -1.3333333338

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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