8x^2+200x+3125=0

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Solution for 8x^2+200x+3125=0 equation:


Simplifying
8x2 + 200x + 3125 = 0

Reorder the terms:
3125 + 200x + 8x2 = 0

Solving
3125 + 200x + 8x2 = 0

Solving for variable 'x'.

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

Divide each side by '8'.
390.625 + 25x + x2 = 0

Move the constant term to the right:

Add '-390.625' to each side of the equation.
390.625 + 25x + -390.625 + x2 = 0 + -390.625

Reorder the terms:
390.625 + -390.625 + 25x + x2 = 0 + -390.625

Combine like terms: 390.625 + -390.625 = 0.000
0.000 + 25x + x2 = 0 + -390.625
25x + x2 = 0 + -390.625

Combine like terms: 0 + -390.625 = -390.625
25x + x2 = -390.625

The x term is 25x.  Take half its coefficient (12.5).
Square it (156.25) and add it to both sides.

Add '156.25' to each side of the equation.
25x + 156.25 + x2 = -390.625 + 156.25

Reorder the terms:
156.25 + 25x + x2 = -390.625 + 156.25

Combine like terms: -390.625 + 156.25 = -234.375
156.25 + 25x + x2 = -234.375

Factor a perfect square on the left side:
(x + 12.5)(x + 12.5) = -234.375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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