(-x^2)+(-.000018)+(.000003x)=0

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Solution for (-x^2)+(-.000018)+(.000003x)=0 equation:


Simplifying
(-1x2) + (-0.000018) + (0.000003x) = 0
(-1x2) + -0.000018 + (0.000003x) = 0

Reorder the terms:
-0.000018 + (0.000003x) + (-1x2) = 0

Solving
-0.000018 + (0.000003x) + (-1x2) = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
0.000018 + (-0.000003x) + x2 = 0

Move the constant term to the right:

Add '-0.000018' to each side of the equation.
0.000018 + (-0.000003x) + -0.000018 + x2 = 0 + -0.000018

Reorder the terms:
0.000018 + -0.000018 + (-0.000003x) + x2 = 0 + -0.000018

Combine like terms: 0.000018 + -0.000018 = 0.000000
0.000000 + (-0.000003x) + x2 = 0 + -0.000018
(-0.000003x) + x2 = 0 + -0.000018

Combine like terms: 0 + -0.000018 = -0.000018
(-0.000003x) + x2 = -0.000018

The x term is (-0.000003x).  Take half its coefficient (-0.0000015).
Square it (0.00000000000225) and add it to both sides.

Add '0.00000000000225' to each side of the equation.
(-0.000003x) + 0.00000000000225 + x2 = -0.000018 + 0.00000000000225

Reorder the terms:
0.00000000000225 + (-0.000003x) + x2 = -0.000018 + 0.00000000000225

Combine like terms: -0.000018 + 0.00000000000225 = -0.00001799999775
0.00000000000225 + (-0.000003x) + x2 = -0.00001799999775

Factor a perfect square on the left side:
((x) + -0.0000015)((x) + -0.0000015) = -0.00001799999775

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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