3x^2+16x+336=0

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Solution for 3x^2+16x+336=0 equation:


Simplifying
3x2 + 16x + 336 = 0

Reorder the terms:
336 + 16x + 3x2 = 0

Solving
336 + 16x + 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'.
112 + 5.333333333x + x2 = 0

Move the constant term to the right:

Add '-112' to each side of the equation.
112 + 5.333333333x + -112 + x2 = 0 + -112

Reorder the terms:
112 + -112 + 5.333333333x + x2 = 0 + -112

Combine like terms: 112 + -112 = 0
0 + 5.333333333x + x2 = 0 + -112
5.333333333x + x2 = 0 + -112

Combine like terms: 0 + -112 = -112
5.333333333x + x2 = -112

The x term is 5.333333333x.  Take half its coefficient (2.666666667).
Square it (7.111111113) and add it to both sides.

Add '7.111111113' to each side of the equation.
5.333333333x + 7.111111113 + x2 = -112 + 7.111111113

Reorder the terms:
7.111111113 + 5.333333333x + x2 = -112 + 7.111111113

Combine like terms: -112 + 7.111111113 = -104.888888887
7.111111113 + 5.333333333x + x2 = -104.888888887

Factor a perfect square on the left side:
(x + 2.666666667)(x + 2.666666667) = -104.888888887

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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