40x^2-x+4000=0

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Solution for 40x^2-x+4000=0 equation:


Simplifying
40x2 + -1x + 4000 = 0

Reorder the terms:
4000 + -1x + 40x2 = 0

Solving
4000 + -1x + 40x2 = 0

Solving for variable 'x'.

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

Divide each side by '40'.
100 + -0.025x + x2 = 0

Move the constant term to the right:

Add '-100' to each side of the equation.
100 + -0.025x + -100 + x2 = 0 + -100

Reorder the terms:
100 + -100 + -0.025x + x2 = 0 + -100

Combine like terms: 100 + -100 = 0
0 + -0.025x + x2 = 0 + -100
-0.025x + x2 = 0 + -100

Combine like terms: 0 + -100 = -100
-0.025x + x2 = -100

The x term is -0.025x.  Take half its coefficient (-0.0125).
Square it (0.00015625) and add it to both sides.

Add '0.00015625' to each side of the equation.
-0.025x + 0.00015625 + x2 = -100 + 0.00015625

Reorder the terms:
0.00015625 + -0.025x + x2 = -100 + 0.00015625

Combine like terms: -100 + 0.00015625 = -99.99984375
0.00015625 + -0.025x + x2 = -99.99984375

Factor a perfect square on the left side:
(x + -0.0125)(x + -0.0125) = -99.99984375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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