300x-0.10x^2-125000=0

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Solution for 300x-0.10x^2-125000=0 equation:


Simplifying
300x + -0.10x2 + -125000 = 0

Reorder the terms:
-125000 + 300x + -0.10x2 = 0

Solving
-125000 + 300x + -0.10x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-0.10 the coefficient of the squared term: 

Divide each side by '-0.10'.
1250000 + -3000x + x2 = 0

Move the constant term to the right:

Add '-1250000' to each side of the equation.
1250000 + -3000x + -1250000 + x2 = 0 + -1250000

Reorder the terms:
1250000 + -1250000 + -3000x + x2 = 0 + -1250000

Combine like terms: 1250000 + -1250000 = 0
0 + -3000x + x2 = 0 + -1250000
-3000x + x2 = 0 + -1250000

Combine like terms: 0 + -1250000 = -1250000
-3000x + x2 = -1250000

The x term is -3000x.  Take half its coefficient (-1500).
Square it (2250000) and add it to both sides.

Add '2250000' to each side of the equation.
-3000x + 2250000 + x2 = -1250000 + 2250000

Reorder the terms:
2250000 + -3000x + x2 = -1250000 + 2250000

Combine like terms: -1250000 + 2250000 = 1000000
2250000 + -3000x + x2 = 1000000

Factor a perfect square on the left side:
(x + -1500)(x + -1500) = 1000000

Calculate the square root of the right side: 1000

Break this problem into two subproblems by setting 
(x + -1500) equal to 1000 and -1000.

Subproblem 1

x + -1500 = 1000 Simplifying x + -1500 = 1000 Reorder the terms: -1500 + x = 1000 Solving -1500 + x = 1000 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1500' to each side of the equation. -1500 + 1500 + x = 1000 + 1500 Combine like terms: -1500 + 1500 = 0 0 + x = 1000 + 1500 x = 1000 + 1500 Combine like terms: 1000 + 1500 = 2500 x = 2500 Simplifying x = 2500

Subproblem 2

x + -1500 = -1000 Simplifying x + -1500 = -1000 Reorder the terms: -1500 + x = -1000 Solving -1500 + x = -1000 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1500' to each side of the equation. -1500 + 1500 + x = -1000 + 1500 Combine like terms: -1500 + 1500 = 0 0 + x = -1000 + 1500 x = -1000 + 1500 Combine like terms: -1000 + 1500 = 500 x = 500 Simplifying x = 500

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2500, 500}

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