5n^2+5n+4=0

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Solution for 5n^2+5n+4=0 equation:


Simplifying
5n2 + 5n + 4 = 0

Reorder the terms:
4 + 5n + 5n2 = 0

Solving
4 + 5n + 5n2 = 0

Solving for variable 'n'.

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

Divide each side by '5'.
0.8 + n + n2 = 0

Move the constant term to the right:

Add '-0.8' to each side of the equation.
0.8 + n + -0.8 + n2 = 0 + -0.8

Reorder the terms:
0.8 + -0.8 + n + n2 = 0 + -0.8

Combine like terms: 0.8 + -0.8 = 0.0
0.0 + n + n2 = 0 + -0.8
n + n2 = 0 + -0.8

Combine like terms: 0 + -0.8 = -0.8
n + n2 = -0.8

The n term is n.  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.
 + 0.25 + n2 = -0.8 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + n2 = -0.8 + 0.25

Combine like terms: -0.8 + 0.25 = -0.55
1.25 + n2 = -0.55

Factor a perfect square on the left side:
(n + 0.5)(n + 0.5) = -0.55

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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