-0.000012x^2-0.018x+300=0

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Solution for -0.000012x^2-0.018x+300=0 equation:


Simplifying
-0.000012x2 + -0.018x + 300 = 0

Reorder the terms:
300 + -0.018x + -0.000012x2 = 0

Solving
300 + -0.018x + -0.000012x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-0.000012 the coefficient of the squared term: 

Divide each side by '-0.000012'.
-25000000 + 1500x + x2 = 0

Move the constant term to the right:

Add '25000000' to each side of the equation.
-25000000 + 1500x + 25000000 + x2 = 0 + 25000000

Reorder the terms:
-25000000 + 25000000 + 1500x + x2 = 0 + 25000000

Combine like terms: -25000000 + 25000000 = 0
0 + 1500x + x2 = 0 + 25000000
1500x + x2 = 0 + 25000000

Combine like terms: 0 + 25000000 = 25000000
1500x + x2 = 25000000

The x term is 1500x.  Take half its coefficient (750).
Square it (562500) and add it to both sides.

Add '562500' to each side of the equation.
1500x + 562500 + x2 = 25000000 + 562500

Reorder the terms:
562500 + 1500x + x2 = 25000000 + 562500

Combine like terms: 25000000 + 562500 = 25562500
562500 + 1500x + x2 = 25562500

Factor a perfect square on the left side:
(x + 750)(x + 750) = 25562500

Calculate the square root of the right side: 5055.937104039

Break this problem into two subproblems by setting 
(x + 750) equal to 5055.937104039 and -5055.937104039.

Subproblem 1

x + 750 = 5055.937104039 Simplifying x + 750 = 5055.937104039 Reorder the terms: 750 + x = 5055.937104039 Solving 750 + x = 5055.937104039 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-750' to each side of the equation. 750 + -750 + x = 5055.937104039 + -750 Combine like terms: 750 + -750 = 0 0 + x = 5055.937104039 + -750 x = 5055.937104039 + -750 Combine like terms: 5055.937104039 + -750 = 4305.937104039 x = 4305.937104039 Simplifying x = 4305.937104039

Subproblem 2

x + 750 = -5055.937104039 Simplifying x + 750 = -5055.937104039 Reorder the terms: 750 + x = -5055.937104039 Solving 750 + x = -5055.937104039 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-750' to each side of the equation. 750 + -750 + x = -5055.937104039 + -750 Combine like terms: 750 + -750 = 0 0 + x = -5055.937104039 + -750 x = -5055.937104039 + -750 Combine like terms: -5055.937104039 + -750 = -5805.937104039 x = -5805.937104039 Simplifying x = -5805.937104039

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4305.937104039, -5805.937104039}

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