0.5x^2-0.4x+0.802=0

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Solution for 0.5x^2-0.4x+0.802=0 equation:


Simplifying
0.5x2 + -0.4x + 0.802 = 0

Reorder the terms:
0.802 + -0.4x + 0.5x2 = 0

Solving
0.802 + -0.4x + 0.5x2 = 0

Solving for variable 'x'.

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

Divide each side by '0.5'.
1.604 + -0.8x + x2 = 0

Move the constant term to the right:

Add '-1.604' to each side of the equation.
1.604 + -0.8x + -1.604 + x2 = 0 + -1.604

Reorder the terms:
1.604 + -1.604 + -0.8x + x2 = 0 + -1.604

Combine like terms: 1.604 + -1.604 = 0.000
0.000 + -0.8x + x2 = 0 + -1.604
-0.8x + x2 = 0 + -1.604

Combine like terms: 0 + -1.604 = -1.604
-0.8x + x2 = -1.604

The x term is -0.8x.  Take half its coefficient (-0.4).
Square it (0.16) and add it to both sides.

Add '0.16' to each side of the equation.
-0.8x + 0.16 + x2 = -1.604 + 0.16

Reorder the terms:
0.16 + -0.8x + x2 = -1.604 + 0.16

Combine like terms: -1.604 + 0.16 = -1.444
0.16 + -0.8x + x2 = -1.444

Factor a perfect square on the left side:
(x + -0.4)(x + -0.4) = -1.444

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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