3u^2+7u+12=0

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Solution for 3u^2+7u+12=0 equation:


Simplifying
3u2 + 7u + 12 = 0

Reorder the terms:
12 + 7u + 3u2 = 0

Solving
12 + 7u + 3u2 = 0

Solving for variable 'u'.

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

Divide each side by '3'.
4 + 2.333333333u + u2 = 0

Move the constant term to the right:

Add '-4' to each side of the equation.
4 + 2.333333333u + -4 + u2 = 0 + -4

Reorder the terms:
4 + -4 + 2.333333333u + u2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + 2.333333333u + u2 = 0 + -4
2.333333333u + u2 = 0 + -4

Combine like terms: 0 + -4 = -4
2.333333333u + u2 = -4

The u term is 2.333333333u.  Take half its coefficient (1.166666667).
Square it (1.361111112) and add it to both sides.

Add '1.361111112' to each side of the equation.
2.333333333u + 1.361111112 + u2 = -4 + 1.361111112

Reorder the terms:
1.361111112 + 2.333333333u + u2 = -4 + 1.361111112

Combine like terms: -4 + 1.361111112 = -2.638888888
1.361111112 + 2.333333333u + u2 = -2.638888888

Factor a perfect square on the left side:
(u + 1.166666667)(u + 1.166666667) = -2.638888888

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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