10x^2+6x-39999=0

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Solution for 10x^2+6x-39999=0 equation:


Simplifying
10x2 + 6x + -39999 = 0

Reorder the terms:
-39999 + 6x + 10x2 = 0

Solving
-39999 + 6x + 10x2 = 0

Solving for variable 'x'.

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

Divide each side by '10'.
-3999.9 + 0.6x + x2 = 0

Move the constant term to the right:

Add '3999.9' to each side of the equation.
-3999.9 + 0.6x + 3999.9 + x2 = 0 + 3999.9

Reorder the terms:
-3999.9 + 3999.9 + 0.6x + x2 = 0 + 3999.9

Combine like terms: -3999.9 + 3999.9 = 0.0
0.0 + 0.6x + x2 = 0 + 3999.9
0.6x + x2 = 0 + 3999.9

Combine like terms: 0 + 3999.9 = 3999.9
0.6x + x2 = 3999.9

The x term is 0.6x.  Take half its coefficient (0.3).
Square it (0.09) and add it to both sides.

Add '0.09' to each side of the equation.
0.6x + 0.09 + x2 = 3999.9 + 0.09

Reorder the terms:
0.09 + 0.6x + x2 = 3999.9 + 0.09

Combine like terms: 3999.9 + 0.09 = 3999.99
0.09 + 0.6x + x2 = 3999.99

Factor a perfect square on the left side:
(x + 0.3)(x + 0.3) = 3999.99

Calculate the square root of the right side: 63.245474146

Break this problem into two subproblems by setting 
(x + 0.3) equal to 63.245474146 and -63.245474146.

Subproblem 1

x + 0.3 = 63.245474146 Simplifying x + 0.3 = 63.245474146 Reorder the terms: 0.3 + x = 63.245474146 Solving 0.3 + x = 63.245474146 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3' to each side of the equation. 0.3 + -0.3 + x = 63.245474146 + -0.3 Combine like terms: 0.3 + -0.3 = 0.0 0.0 + x = 63.245474146 + -0.3 x = 63.245474146 + -0.3 Combine like terms: 63.245474146 + -0.3 = 62.945474146 x = 62.945474146 Simplifying x = 62.945474146

Subproblem 2

x + 0.3 = -63.245474146 Simplifying x + 0.3 = -63.245474146 Reorder the terms: 0.3 + x = -63.245474146 Solving 0.3 + x = -63.245474146 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3' to each side of the equation. 0.3 + -0.3 + x = -63.245474146 + -0.3 Combine like terms: 0.3 + -0.3 = 0.0 0.0 + x = -63.245474146 + -0.3 x = -63.245474146 + -0.3 Combine like terms: -63.245474146 + -0.3 = -63.545474146 x = -63.545474146 Simplifying x = -63.545474146

Solution

The solution to the problem is based on the solutions from the subproblems. x = {62.945474146, -63.545474146}

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