2u^2+15u+47=0

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Solution for 2u^2+15u+47=0 equation:


Simplifying
2u2 + 15u + 47 = 0

Reorder the terms:
47 + 15u + 2u2 = 0

Solving
47 + 15u + 2u2 = 0

Solving for variable 'u'.

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

Divide each side by '2'.
23.5 + 7.5u + u2 = 0

Move the constant term to the right:

Add '-23.5' to each side of the equation.
23.5 + 7.5u + -23.5 + u2 = 0 + -23.5

Reorder the terms:
23.5 + -23.5 + 7.5u + u2 = 0 + -23.5

Combine like terms: 23.5 + -23.5 = 0.0
0.0 + 7.5u + u2 = 0 + -23.5
7.5u + u2 = 0 + -23.5

Combine like terms: 0 + -23.5 = -23.5
7.5u + u2 = -23.5

The u term is 7.5u.  Take half its coefficient (3.75).
Square it (14.0625) and add it to both sides.

Add '14.0625' to each side of the equation.
7.5u + 14.0625 + u2 = -23.5 + 14.0625

Reorder the terms:
14.0625 + 7.5u + u2 = -23.5 + 14.0625

Combine like terms: -23.5 + 14.0625 = -9.4375
14.0625 + 7.5u + u2 = -9.4375

Factor a perfect square on the left side:
(u + 3.75)(u + 3.75) = -9.4375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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