5a^2+a+2=0

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


Simplifying
5a2 + a + 2 = 0

Reorder the terms:
2 + a + 5a2 = 0

Solving
2 + a + 5a2 = 0

Solving for variable 'a'.

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

Divide each side by '5'.
0.4 + 0.2a + a2 = 0

Move the constant term to the right:

Add '-0.4' to each side of the equation.
0.4 + 0.2a + -0.4 + a2 = 0 + -0.4

Reorder the terms:
0.4 + -0.4 + 0.2a + a2 = 0 + -0.4

Combine like terms: 0.4 + -0.4 = 0.0
0.0 + 0.2a + a2 = 0 + -0.4
0.2a + a2 = 0 + -0.4

Combine like terms: 0 + -0.4 = -0.4
0.2a + a2 = -0.4

The a term is a.  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.
0.2a + 0.25 + a2 = -0.4 + 0.25

Reorder the terms:
0.25 + 0.2a + a2 = -0.4 + 0.25

Combine like terms: -0.4 + 0.25 = -0.15
0.25 + 0.2a + a2 = -0.15

Factor a perfect square on the left side:
(a + 0.5)(a + 0.5) = -0.15

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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