0.2x^2+105x-2500=0

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Solution for 0.2x^2+105x-2500=0 equation:


Simplifying
0.2x2 + 105x + -2500 = 0

Reorder the terms:
-2500 + 105x + 0.2x2 = 0

Solving
-2500 + 105x + 0.2x2 = 0

Solving for variable 'x'.

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

Divide each side by '0.2'.
-12500 + 525x + x2 = 0

Move the constant term to the right:

Add '12500' to each side of the equation.
-12500 + 525x + 12500 + x2 = 0 + 12500

Reorder the terms:
-12500 + 12500 + 525x + x2 = 0 + 12500

Combine like terms: -12500 + 12500 = 0
0 + 525x + x2 = 0 + 12500
525x + x2 = 0 + 12500

Combine like terms: 0 + 12500 = 12500
525x + x2 = 12500

The x term is 525x.  Take half its coefficient (262.5).
Square it (68906.25) and add it to both sides.

Add '68906.25' to each side of the equation.
525x + 68906.25 + x2 = 12500 + 68906.25

Reorder the terms:
68906.25 + 525x + x2 = 12500 + 68906.25

Combine like terms: 12500 + 68906.25 = 81406.25
68906.25 + 525x + x2 = 81406.25

Factor a perfect square on the left side:
(x + 262.5)(x + 262.5) = 81406.25

Calculate the square root of the right side: 285.317805263

Break this problem into two subproblems by setting 
(x + 262.5) equal to 285.317805263 and -285.317805263.

Subproblem 1

x + 262.5 = 285.317805263 Simplifying x + 262.5 = 285.317805263 Reorder the terms: 262.5 + x = 285.317805263 Solving 262.5 + x = 285.317805263 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-262.5' to each side of the equation. 262.5 + -262.5 + x = 285.317805263 + -262.5 Combine like terms: 262.5 + -262.5 = 0.0 0.0 + x = 285.317805263 + -262.5 x = 285.317805263 + -262.5 Combine like terms: 285.317805263 + -262.5 = 22.817805263 x = 22.817805263 Simplifying x = 22.817805263

Subproblem 2

x + 262.5 = -285.317805263 Simplifying x + 262.5 = -285.317805263 Reorder the terms: 262.5 + x = -285.317805263 Solving 262.5 + x = -285.317805263 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-262.5' to each side of the equation. 262.5 + -262.5 + x = -285.317805263 + -262.5 Combine like terms: 262.5 + -262.5 = 0.0 0.0 + x = -285.317805263 + -262.5 x = -285.317805263 + -262.5 Combine like terms: -285.317805263 + -262.5 = -547.817805263 x = -547.817805263 Simplifying x = -547.817805263

Solution

The solution to the problem is based on the solutions from the subproblems. x = {22.817805263, -547.817805263}

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