2c^2+c+5=0

Solution for 2c^2+c+5=0 equation:

Simplifying
2c2 + c + 5 = 0

Reorder the terms:
5 + c + 2c2 = 0

Solving
5 + c + 2c2 = 0

Solving for variable 'c'.

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

Divide each side by '2'.
2.5 + 0.5c + c2 = 0

Move the constant term to the right:

Add '-2.5' to each side of the equation.
2.5 + 0.5c + -2.5 + c2 = 0 + -2.5

Reorder the terms:
2.5 + -2.5 + 0.5c + c2 = 0 + -2.5

Combine like terms: 2.5 + -2.5 = 0.0
0.0 + 0.5c + c2 = 0 + -2.5
0.5c + c2 = 0 + -2.5

Combine like terms: 0 + -2.5 = -2.5
0.5c + c2 = -2.5

The c term is c.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
0.5c + 0.25 + c2 = -2.5 + 0.25

Reorder the terms:
0.25 + 0.5c + c2 = -2.5 + 0.25

Combine like terms: -2.5 + 0.25 = -2.25
0.25 + 0.5c + c2 = -2.25

Factor a perfect square on the left side:
(c + 0.5)(c + 0.5) = -2.25

Can't calculate square root of the right side.

The solution to this equation could not be determined.