3x^2=4x-4*9

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Solution for 3x^2=4x-4*9 equation:


Simplifying
3x2 = 4x + -4 * 9

Multiply -4 * 9
3x2 = 4x + -36

Reorder the terms:
3x2 = -36 + 4x

Solving
3x2 = -36 + 4x

Solving for variable 'x'.

Reorder the terms:
36 + -4x + 3x2 = -36 + 4x + 36 + -4x

Reorder the terms:
36 + -4x + 3x2 = -36 + 36 + 4x + -4x

Combine like terms: -36 + 36 = 0
36 + -4x + 3x2 = 0 + 4x + -4x
36 + -4x + 3x2 = 4x + -4x

Combine like terms: 4x + -4x = 0
36 + -4x + 3x2 = 0

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

Divide each side by '3'.
12 + -1.333333333x + x2 = 0

Move the constant term to the right:

Add '-12' to each side of the equation.
12 + -1.333333333x + -12 + x2 = 0 + -12

Reorder the terms:
12 + -12 + -1.333333333x + x2 = 0 + -12

Combine like terms: 12 + -12 = 0
0 + -1.333333333x + x2 = 0 + -12
-1.333333333x + x2 = 0 + -12

Combine like terms: 0 + -12 = -12
-1.333333333x + x2 = -12

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 = -12 + 0.4444444442

Reorder the terms:
0.4444444442 + -1.333333333x + x2 = -12 + 0.4444444442

Combine like terms: -12 + 0.4444444442 = -11.5555555558
0.4444444442 + -1.333333333x + x2 = -11.5555555558

Factor a perfect square on the left side:
(x + -0.6666666665)(x + -0.6666666665) = -11.5555555558

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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