0=28x^2-12x+9

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


Simplifying
0 = 28x2 + -12x + 9

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

Solving
0 = 9 + -12x + 28x2

Solving for variable 'x'.

Combine like terms: 0 + -9 = -9
-9 + 12x + -28x2 = 9 + -12x + 28x2 + -9 + 12x + -28x2

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

Combine like terms: 9 + -9 = 0
-9 + 12x + -28x2 = 0 + -12x + 12x + 28x2 + -28x2
-9 + 12x + -28x2 = -12x + 12x + 28x2 + -28x2

Combine like terms: -12x + 12x = 0
-9 + 12x + -28x2 = 0 + 28x2 + -28x2
-9 + 12x + -28x2 = 28x2 + -28x2

Combine like terms: 28x2 + -28x2 = 0
-9 + 12x + -28x2 = 0

Begin completing the square.  Divide all terms by
-28 the coefficient of the squared term: 

Divide each side by '-28'.
0.3214285714 + -0.4285714286x + x2 = 0

Move the constant term to the right:

Add '-0.3214285714' to each side of the equation.
0.3214285714 + -0.4285714286x + -0.3214285714 + x2 = 0 + -0.3214285714

Reorder the terms:
0.3214285714 + -0.3214285714 + -0.4285714286x + x2 = 0 + -0.3214285714

Combine like terms: 0.3214285714 + -0.3214285714 = 0.0000000000
0.0000000000 + -0.4285714286x + x2 = 0 + -0.3214285714
-0.4285714286x + x2 = 0 + -0.3214285714

Combine like terms: 0 + -0.3214285714 = -0.3214285714
-0.4285714286x + x2 = -0.3214285714

The x term is -0.4285714286x.  Take half its coefficient (-0.2142857143).
Square it (0.04591836735) and add it to both sides.

Add '0.04591836735' to each side of the equation.
-0.4285714286x + 0.04591836735 + x2 = -0.3214285714 + 0.04591836735

Reorder the terms:
0.04591836735 + -0.4285714286x + x2 = -0.3214285714 + 0.04591836735

Combine like terms: -0.3214285714 + 0.04591836735 = -0.27551020405
0.04591836735 + -0.4285714286x + x2 = -0.27551020405

Factor a perfect square on the left side:
(x + -0.2142857143)(x + -0.2142857143) = -0.27551020405

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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