4x^2+20x+125=0

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Solution for 4x^2+20x+125=0 equation:


Simplifying
4x2 + 20x + 125 = 0

Reorder the terms:
125 + 20x + 4x2 = 0

Solving
125 + 20x + 4x2 = 0

Solving for variable 'x'.

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

Divide each side by '4'.
31.25 + 5x + x2 = 0

Move the constant term to the right:

Add '-31.25' to each side of the equation.
31.25 + 5x + -31.25 + x2 = 0 + -31.25

Reorder the terms:
31.25 + -31.25 + 5x + x2 = 0 + -31.25

Combine like terms: 31.25 + -31.25 = 0.00
0.00 + 5x + x2 = 0 + -31.25
5x + x2 = 0 + -31.25

Combine like terms: 0 + -31.25 = -31.25
5x + x2 = -31.25

The x term is 5x.  Take half its coefficient (2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
5x + 6.25 + x2 = -31.25 + 6.25

Reorder the terms:
6.25 + 5x + x2 = -31.25 + 6.25

Combine like terms: -31.25 + 6.25 = -25
6.25 + 5x + x2 = -25

Factor a perfect square on the left side:
(x + 2.5)(x + 2.5) = -25

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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