-0.000003x^2+0.002x+5=0

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Solution for -0.000003x^2+0.002x+5=0 equation:


Simplifying
-0.000003x2 + 0.002x + 5 = 0

Reorder the terms:
5 + 0.002x + -0.000003x2 = 0

Solving
5 + 0.002x + -0.000003x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-0.000003 the coefficient of the squared term: 

Divide each side by '-0.000003'.
-1666666.667 + -666.6666667x + x2 = 0

Move the constant term to the right:

Add '1666666.667' to each side of the equation.
-1666666.667 + -666.6666667x + 1666666.667 + x2 = 0 + 1666666.667

Reorder the terms:
-1666666.667 + 1666666.667 + -666.6666667x + x2 = 0 + 1666666.667

Combine like terms: -1666666.667 + 1666666.667 = 0.000
0.000 + -666.6666667x + x2 = 0 + 1666666.667
-666.6666667x + x2 = 0 + 1666666.667

Combine like terms: 0 + 1666666.667 = 1666666.667
-666.6666667x + x2 = 1666666.667

The x term is -666.6666667x.  Take half its coefficient (-333.3333334).
Square it (111111.1112) and add it to both sides.

Add '111111.1112' to each side of the equation.
-666.6666667x + 111111.1112 + x2 = 1666666.667 + 111111.1112

Reorder the terms:
111111.1112 + -666.6666667x + x2 = 1666666.667 + 111111.1112

Combine like terms: 1666666.667 + 111111.1112 = 1777777.7782
111111.1112 + -666.6666667x + x2 = 1777777.7782

Factor a perfect square on the left side:
(x + -333.3333334)(x + -333.3333334) = 1777777.7782

Calculate the square root of the right side: 1333.333333492

Break this problem into two subproblems by setting 
(x + -333.3333334) equal to 1333.333333492 and -1333.333333492.

Subproblem 1

x + -333.3333334 = 1333.333333492 Simplifying x + -333.3333334 = 1333.333333492 Reorder the terms: -333.3333334 + x = 1333.333333492 Solving -333.3333334 + x = 1333.333333492 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '333.3333334' to each side of the equation. -333.3333334 + 333.3333334 + x = 1333.333333492 + 333.3333334 Combine like terms: -333.3333334 + 333.3333334 = 0.0000000 0.0000000 + x = 1333.333333492 + 333.3333334 x = 1333.333333492 + 333.3333334 Combine like terms: 1333.333333492 + 333.3333334 = 1666.666666892 x = 1666.666666892 Simplifying x = 1666.666666892

Subproblem 2

x + -333.3333334 = -1333.333333492 Simplifying x + -333.3333334 = -1333.333333492 Reorder the terms: -333.3333334 + x = -1333.333333492 Solving -333.3333334 + x = -1333.333333492 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '333.3333334' to each side of the equation. -333.3333334 + 333.3333334 + x = -1333.333333492 + 333.3333334 Combine like terms: -333.3333334 + 333.3333334 = 0.0000000 0.0000000 + x = -1333.333333492 + 333.3333334 x = -1333.333333492 + 333.3333334 Combine like terms: -1333.333333492 + 333.3333334 = -1000.000000092 x = -1000.000000092 Simplifying x = -1000.000000092

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1666.666666892, -1000.000000092}

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