0.4=x(0.01-x)

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Solution for 0.4=x(0.01-x) equation:


Simplifying
0.4 = x(0.01 + -1x)
0.4 = (0.01 * x + -1x * x)
0.4 = (0.01x + -1x2)

Solving
0.4 = 0.01x + -1x2

Solving for variable 'x'.

Reorder the terms:
0.4 + -0.01x + x2 = 0.01x + -0.01x + -1x2 + x2

Combine like terms: 0.01x + -0.01x = 0.00
0.4 + -0.01x + x2 = 0.00 + -1x2 + x2
0.4 + -0.01x + x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
0.4 + -0.01x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-0.4' to each side of the equation.
0.4 + -0.01x + -0.4 + x2 = 0 + -0.4

Reorder the terms:
0.4 + -0.4 + -0.01x + x2 = 0 + -0.4

Combine like terms: 0.4 + -0.4 = 0.0
0.0 + -0.01x + x2 = 0 + -0.4
-0.01x + x2 = 0 + -0.4

Combine like terms: 0 + -0.4 = -0.4
-0.01x + x2 = -0.4

The x term is -0.01x.  Take half its coefficient (-0.005).
Square it (0.000025) and add it to both sides.

Add '0.000025' to each side of the equation.
-0.01x + 0.000025 + x2 = -0.4 + 0.000025

Reorder the terms:
0.000025 + -0.01x + x2 = -0.4 + 0.000025

Combine like terms: -0.4 + 0.000025 = -0.399975
0.000025 + -0.01x + x2 = -0.399975

Factor a perfect square on the left side:
(x + -0.005)(x + -0.005) = -0.399975

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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