25a^2+10a+8=0

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Solution for 25a^2+10a+8=0 equation:


Simplifying
25a2 + 10a + 8 = 0

Reorder the terms:
8 + 10a + 25a2 = 0

Solving
8 + 10a + 25a2 = 0

Solving for variable 'a'.

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

Divide each side by '25'.
0.32 + 0.4a + a2 = 0

Move the constant term to the right:

Add '-0.32' to each side of the equation.
0.32 + 0.4a + -0.32 + a2 = 0 + -0.32

Reorder the terms:
0.32 + -0.32 + 0.4a + a2 = 0 + -0.32

Combine like terms: 0.32 + -0.32 = 0.00
0.00 + 0.4a + a2 = 0 + -0.32
0.4a + a2 = 0 + -0.32

Combine like terms: 0 + -0.32 = -0.32
0.4a + a2 = -0.32

The a term is 0.4a.  Take half its coefficient (0.2).
Square it (0.04) and add it to both sides.

Add '0.04' to each side of the equation.
0.4a + 0.04 + a2 = -0.32 + 0.04

Reorder the terms:
0.04 + 0.4a + a2 = -0.32 + 0.04

Combine like terms: -0.32 + 0.04 = -0.28
0.04 + 0.4a + a2 = -0.28

Factor a perfect square on the left side:
(a + 0.2)(a + 0.2) = -0.28

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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