3x^2-4x+84=0

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Solution for 3x^2-4x+84=0 equation:


Simplifying
3x2 + -4x + 84 = 0

Reorder the terms:
84 + -4x + 3x2 = 0

Solving
84 + -4x + 3x2 = 0

Solving for variable 'x'.

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

Divide each side by '3'.
28 + -1.333333333x + x2 = 0

Move the constant term to the right:

Add '-28' to each side of the equation.
28 + -1.333333333x + -28 + x2 = 0 + -28

Reorder the terms:
28 + -28 + -1.333333333x + x2 = 0 + -28

Combine like terms: 28 + -28 = 0
0 + -1.333333333x + x2 = 0 + -28
-1.333333333x + x2 = 0 + -28

Combine like terms: 0 + -28 = -28
-1.333333333x + x2 = -28

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 = -28 + 0.4444444442

Reorder the terms:
0.4444444442 + -1.333333333x + x2 = -28 + 0.4444444442

Combine like terms: -28 + 0.4444444442 = -27.5555555558
0.4444444442 + -1.333333333x + x2 = -27.5555555558

Factor a perfect square on the left side:
(x + -0.6666666665)(x + -0.6666666665) = -27.5555555558

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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