(8u^2)+(3u+6)=0

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Solution for (8u^2)+(3u+6)=0 equation:


Simplifying
(8u2) + (3u + 6) = 0

Reorder the terms:
(8u2) + (6 + 3u) = 0

Remove parenthesis around (6 + 3u)
(8u2) + 6 + 3u = 0

Reorder the terms:
6 + 3u + (8u2) = 0

Solving
6 + 3u + (8u2) = 0

Solving for variable 'u'.

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

Divide each side by '8'.
0.75 + 0.375u + u2 = 0

Move the constant term to the right:

Add '-0.75' to each side of the equation.
0.75 + 0.375u + -0.75 + u2 = 0 + -0.75

Reorder the terms:
0.75 + -0.75 + 0.375u + u2 = 0 + -0.75

Combine like terms: 0.75 + -0.75 = 0.00
0.00 + 0.375u + u2 = 0 + -0.75
0.375u + u2 = 0 + -0.75

Combine like terms: 0 + -0.75 = -0.75
0.375u + u2 = -0.75

The u term is 0.375u.  Take half its coefficient (0.1875).
Square it (0.03515625) and add it to both sides.

Add '0.03515625' to each side of the equation.
0.375u + 0.03515625 + u2 = -0.75 + 0.03515625

Reorder the terms:
0.03515625 + 0.375u + u2 = -0.75 + 0.03515625

Combine like terms: -0.75 + 0.03515625 = -0.71484375
0.03515625 + 0.375u + u2 = -0.71484375

Factor a perfect square on the left side:
((u) + 0.1875)((u) + 0.1875) = -0.71484375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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