3x^2+12x+16=0

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Solution for 3x^2+12x+16=0 equation:


Simplifying
3x2 + 12x + 16 = 0

Reorder the terms:
16 + 12x + 3x2 = 0

Solving
16 + 12x + 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'.
5.333333333 + 4x + x2 = 0

Move the constant term to the right:

Add '-5.333333333' to each side of the equation.
5.333333333 + 4x + -5.333333333 + x2 = 0 + -5.333333333

Reorder the terms:
5.333333333 + -5.333333333 + 4x + x2 = 0 + -5.333333333

Combine like terms: 5.333333333 + -5.333333333 = 0.000000000
0.000000000 + 4x + x2 = 0 + -5.333333333
4x + x2 = 0 + -5.333333333

Combine like terms: 0 + -5.333333333 = -5.333333333
4x + x2 = -5.333333333

The x term is 4x.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4x + 4 + x2 = -5.333333333 + 4

Reorder the terms:
4 + 4x + x2 = -5.333333333 + 4

Combine like terms: -5.333333333 + 4 = -1.333333333
4 + 4x + x2 = -1.333333333

Factor a perfect square on the left side:
(x + 2)(x + 2) = -1.333333333

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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