3x^2=9+4x-4(9)

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Solution for 3x^2=9+4x-4(9) equation:


Simplifying
3x2 = 9 + 4x + -4(9)

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

Reorder the terms:
3x2 = 9 + -36 + 4x

Combine like terms: 9 + -36 = -27
3x2 = -27 + 4x

Solving
3x2 = -27 + 4x

Solving for variable 'x'.

Reorder the terms:
27 + -4x + 3x2 = -27 + 4x + 27 + -4x

Reorder the terms:
27 + -4x + 3x2 = -27 + 27 + 4x + -4x

Combine like terms: -27 + 27 = 0
27 + -4x + 3x2 = 0 + 4x + -4x
27 + -4x + 3x2 = 4x + -4x

Combine like terms: 4x + -4x = 0
27 + -4x + 3x2 = 0

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

Divide each side by '3'.
9 + -1.333333333x + x2 = 0

Move the constant term to the right:

Add '-9' to each side of the equation.
9 + -1.333333333x + -9 + x2 = 0 + -9

Reorder the terms:
9 + -9 + -1.333333333x + x2 = 0 + -9

Combine like terms: 9 + -9 = 0
0 + -1.333333333x + x2 = 0 + -9
-1.333333333x + x2 = 0 + -9

Combine like terms: 0 + -9 = -9
-1.333333333x + x2 = -9

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 = -9 + 0.4444444442

Reorder the terms:
0.4444444442 + -1.333333333x + x2 = -9 + 0.4444444442

Combine like terms: -9 + 0.4444444442 = -8.5555555558
0.4444444442 + -1.333333333x + x2 = -8.5555555558

Factor a perfect square on the left side:
(x + -0.6666666665)(x + -0.6666666665) = -8.5555555558

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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