2a^2+11a+30.25=0

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Solution for 2a^2+11a+30.25=0 equation:


Simplifying
2a2 + 11a + 30.25 = 0

Reorder the terms:
30.25 + 11a + 2a2 = 0

Solving
30.25 + 11a + 2a2 = 0

Solving for variable 'a'.

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

Divide each side by '2'.
15.125 + 5.5a + a2 = 0

Move the constant term to the right:

Add '-15.125' to each side of the equation.
15.125 + 5.5a + -15.125 + a2 = 0 + -15.125

Reorder the terms:
15.125 + -15.125 + 5.5a + a2 = 0 + -15.125

Combine like terms: 15.125 + -15.125 = 0.000
0.000 + 5.5a + a2 = 0 + -15.125
5.5a + a2 = 0 + -15.125

Combine like terms: 0 + -15.125 = -15.125
5.5a + a2 = -15.125

The a term is 5.5a.  Take half its coefficient (2.75).
Square it (7.5625) and add it to both sides.

Add '7.5625' to each side of the equation.
5.5a + 7.5625 + a2 = -15.125 + 7.5625

Reorder the terms:
7.5625 + 5.5a + a2 = -15.125 + 7.5625

Combine like terms: -15.125 + 7.5625 = -7.5625
7.5625 + 5.5a + a2 = -7.5625

Factor a perfect square on the left side:
(a + 2.75)(a + 2.75) = -7.5625

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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