9x^2-12x+28=0

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Solution for 9x^2-12x+28=0 equation:


Simplifying
9x2 + -12x + 28 = 0

Reorder the terms:
28 + -12x + 9x2 = 0

Solving
28 + -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'.
3.111111111 + -1.333333333x + x2 = 0

Move the constant term to the right:

Add '-3.111111111' to each side of the equation.
3.111111111 + -1.333333333x + -3.111111111 + x2 = 0 + -3.111111111

Reorder the terms:
3.111111111 + -3.111111111 + -1.333333333x + x2 = 0 + -3.111111111

Combine like terms: 3.111111111 + -3.111111111 = 0.000000000
0.000000000 + -1.333333333x + x2 = 0 + -3.111111111
-1.333333333x + x2 = 0 + -3.111111111

Combine like terms: 0 + -3.111111111 = -3.111111111
-1.333333333x + x2 = -3.111111111

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 = -3.111111111 + 0.4444444442

Reorder the terms:
0.4444444442 + -1.333333333x + x2 = -3.111111111 + 0.4444444442

Combine like terms: -3.111111111 + 0.4444444442 = -2.6666666668
0.4444444442 + -1.333333333x + x2 = -2.6666666668

Factor a perfect square on the left side:
(x + -0.6666666665)(x + -0.6666666665) = -2.6666666668

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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