9a^2+12a+7=0

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Solution for 9a^2+12a+7=0 equation:


Simplifying
9a2 + 12a + 7 = 0

Reorder the terms:
7 + 12a + 9a2 = 0

Solving
7 + 12a + 9a2 = 0

Solving for variable 'a'.

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

Divide each side by '9'.
0.7777777778 + 1.333333333a + a2 = 0

Move the constant term to the right:

Add '-0.7777777778' to each side of the equation.
0.7777777778 + 1.333333333a + -0.7777777778 + a2 = 0 + -0.7777777778

Reorder the terms:
0.7777777778 + -0.7777777778 + 1.333333333a + a2 = 0 + -0.7777777778

Combine like terms: 0.7777777778 + -0.7777777778 = 0.0000000000
0.0000000000 + 1.333333333a + a2 = 0 + -0.7777777778
1.333333333a + a2 = 0 + -0.7777777778

Combine like terms: 0 + -0.7777777778 = -0.7777777778
1.333333333a + a2 = -0.7777777778

The a term is 1.333333333a.  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.
1.333333333a + 0.4444444442 + a2 = -0.7777777778 + 0.4444444442

Reorder the terms:
0.4444444442 + 1.333333333a + a2 = -0.7777777778 + 0.4444444442

Combine like terms: -0.7777777778 + 0.4444444442 = -0.3333333336
0.4444444442 + 1.333333333a + a2 = -0.3333333336

Factor a perfect square on the left side:
(a + 0.6666666665)(a + 0.6666666665) = -0.3333333336

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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