4u^2+5u+6=0

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Solution for 4u^2+5u+6=0 equation:


Simplifying
4u2 + 5u + 6 = 0

Reorder the terms:
6 + 5u + 4u2 = 0

Solving
6 + 5u + 4u2 = 0

Solving for variable 'u'.

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

Divide each side by '4'.
1.5 + 1.25u + u2 = 0

Move the constant term to the right:

Add '-1.5' to each side of the equation.
1.5 + 1.25u + -1.5 + u2 = 0 + -1.5

Reorder the terms:
1.5 + -1.5 + 1.25u + u2 = 0 + -1.5

Combine like terms: 1.5 + -1.5 = 0.0
0.0 + 1.25u + u2 = 0 + -1.5
1.25u + u2 = 0 + -1.5

Combine like terms: 0 + -1.5 = -1.5
1.25u + u2 = -1.5

The u term is 1.25u.  Take half its coefficient (0.625).
Square it (0.390625) and add it to both sides.

Add '0.390625' to each side of the equation.
1.25u + 0.390625 + u2 = -1.5 + 0.390625

Reorder the terms:
0.390625 + 1.25u + u2 = -1.5 + 0.390625

Combine like terms: -1.5 + 0.390625 = -1.109375
0.390625 + 1.25u + u2 = -1.109375

Factor a perfect square on the left side:
(u + 0.625)(u + 0.625) = -1.109375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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