4x^2+5x+1.625=0

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Solution for 4x^2+5x+1.625=0 equation:


Simplifying
4x2 + 5x + 1.625 = 0

Reorder the terms:
1.625 + 5x + 4x2 = 0

Solving
1.625 + 5x + 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'.
0.40625 + 1.25x + x2 = 0

Move the constant term to the right:

Add '-0.40625' to each side of the equation.
0.40625 + 1.25x + -0.40625 + x2 = 0 + -0.40625

Reorder the terms:
0.40625 + -0.40625 + 1.25x + x2 = 0 + -0.40625

Combine like terms: 0.40625 + -0.40625 = 0.00000
0.00000 + 1.25x + x2 = 0 + -0.40625
1.25x + x2 = 0 + -0.40625

Combine like terms: 0 + -0.40625 = -0.40625
1.25x + x2 = -0.40625

The x term is 1.25x.  Take half its coefficient (0.625).
Square it (0.390625) and add it to both sides.

Add '0.390625' to each side of the equation.
1.25x + 0.390625 + x2 = -0.40625 + 0.390625

Reorder the terms:
0.390625 + 1.25x + x2 = -0.40625 + 0.390625

Combine like terms: -0.40625 + 0.390625 = -0.015625
0.390625 + 1.25x + x2 = -0.015625

Factor a perfect square on the left side:
(x + 0.625)(x + 0.625) = -0.015625

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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