9a^2-12a+4=-9

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Solution for 9a^2-12a+4=-9 equation:


Simplifying
9a2 + -12a + 4 = -9

Reorder the terms:
4 + -12a + 9a2 = -9

Solving
4 + -12a + 9a2 = -9

Solving for variable 'a'.

Reorder the terms:
4 + 9 + -12a + 9a2 = -9 + 9

Combine like terms: 4 + 9 = 13
13 + -12a + 9a2 = -9 + 9

Combine like terms: -9 + 9 = 0
13 + -12a + 9a2 = 0

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

Divide each side by '9'.
1.444444444 + -1.333333333a + a2 = 0

Move the constant term to the right:

Add '-1.444444444' to each side of the equation.
1.444444444 + -1.333333333a + -1.444444444 + a2 = 0 + -1.444444444

Reorder the terms:
1.444444444 + -1.444444444 + -1.333333333a + a2 = 0 + -1.444444444

Combine like terms: 1.444444444 + -1.444444444 = 0.000000000
0.000000000 + -1.333333333a + a2 = 0 + -1.444444444
-1.333333333a + a2 = 0 + -1.444444444

Combine like terms: 0 + -1.444444444 = -1.444444444
-1.333333333a + a2 = -1.444444444

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 = -1.444444444 + 0.4444444442

Reorder the terms:
0.4444444442 + -1.333333333a + a2 = -1.444444444 + 0.4444444442

Combine like terms: -1.444444444 + 0.4444444442 = -0.9999999998
0.4444444442 + -1.333333333a + a2 = -0.9999999998

Factor a perfect square on the left side:
(a + -0.6666666665)(a + -0.6666666665) = -0.9999999998

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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