2u^2+15u=-30

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Solution for 2u^2+15u=-30 equation:


Simplifying
2u2 + 15u = -30

Reorder the terms:
15u + 2u2 = -30

Solving
15u + 2u2 = -30

Solving for variable 'u'.

Reorder the terms:
30 + 15u + 2u2 = -30 + 30

Combine like terms: -30 + 30 = 0
30 + 15u + 2u2 = 0

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

Divide each side by '2'.
15 + 7.5u + u2 = 0

Move the constant term to the right:

Add '-15' to each side of the equation.
15 + 7.5u + -15 + u2 = 0 + -15

Reorder the terms:
15 + -15 + 7.5u + u2 = 0 + -15

Combine like terms: 15 + -15 = 0
0 + 7.5u + u2 = 0 + -15
7.5u + u2 = 0 + -15

Combine like terms: 0 + -15 = -15
7.5u + u2 = -15

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 = -15 + 14.0625

Reorder the terms:
14.0625 + 7.5u + u2 = -15 + 14.0625

Combine like terms: -15 + 14.0625 = -0.9375
14.0625 + 7.5u + u2 = -0.9375

Factor a perfect square on the left side:
(u + 3.75)(u + 3.75) = -0.9375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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