1.72x*x+1-2x=0

Solution for 1.72x*x+1-2x=0 equation:

Simplifying
1.72x * x + 1 + -2x = 0

Multiply x * x
1.72x2 + 1 + -2x = 0

Reorder the terms:
1 + -2x + 1.72x2 = 0

Solving
1 + -2x + 1.72x2 = 0

Solving for variable 'x'.

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

Divide each side by '1.72'.
0.5813953488 + -1.162790698x + x2 = 0

Move the constant term to the right:

Add '-0.5813953488' to each side of the equation.
0.5813953488 + -1.162790698x + -0.5813953488 + x2 = 0 + -0.5813953488

Reorder the terms:
0.5813953488 + -0.5813953488 + -1.162790698x + x2 = 0 + -0.5813953488

Combine like terms: 0.5813953488 + -0.5813953488 = 0.0000000000
0.0000000000 + -1.162790698x + x2 = 0 + -0.5813953488
-1.162790698x + x2 = 0 + -0.5813953488

Combine like terms: 0 + -0.5813953488 = -0.5813953488
-1.162790698x + x2 = -0.5813953488

The x term is -1.162790698x.  Take half its coefficient (-0.581395349).
Square it (0.3380205518) and add it to both sides.

Add '0.3380205518' to each side of the equation.
-1.162790698x + 0.3380205518 + x2 = -0.5813953488 + 0.3380205518

Reorder the terms:
0.3380205518 + -1.162790698x + x2 = -0.5813953488 + 0.3380205518

Combine like terms: -0.5813953488 + 0.3380205518 = -0.243374797
0.3380205518 + -1.162790698x + x2 = -0.243374797

Factor a perfect square on the left side:
(x + -0.581395349)(x + -0.581395349) = -0.243374797

Can't calculate square root of the right side.

The solution to this equation could not be determined.