-0.01x^2+130x-180000=174900

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Solution for -0.01x^2+130x-180000=174900 equation:


Simplifying
-0.01x2 + 130x + -180000 = 174900

Reorder the terms:
-180000 + 130x + -0.01x2 = 174900

Solving
-180000 + 130x + -0.01x2 = 174900

Solving for variable 'x'.

Reorder the terms:
-180000 + -174900 + 130x + -0.01x2 = 174900 + -174900

Combine like terms: -180000 + -174900 = -354900
-354900 + 130x + -0.01x2 = 174900 + -174900

Combine like terms: 174900 + -174900 = 0
-354900 + 130x + -0.01x2 = 0

Begin completing the square.  Divide all terms by
-0.01 the coefficient of the squared term: 

Divide each side by '-0.01'.
35490000 + -13000x + x2 = 0

Move the constant term to the right:

Add '-35490000' to each side of the equation.
35490000 + -13000x + -35490000 + x2 = 0 + -35490000

Reorder the terms:
35490000 + -35490000 + -13000x + x2 = 0 + -35490000

Combine like terms: 35490000 + -35490000 = 0
0 + -13000x + x2 = 0 + -35490000
-13000x + x2 = 0 + -35490000

Combine like terms: 0 + -35490000 = -35490000
-13000x + x2 = -35490000

The x term is -13000x.  Take half its coefficient (-6500).
Square it (42250000) and add it to both sides.

Add '42250000' to each side of the equation.
-13000x + 42250000 + x2 = -35490000 + 42250000

Reorder the terms:
42250000 + -13000x + x2 = -35490000 + 42250000

Combine like terms: -35490000 + 42250000 = 6760000
42250000 + -13000x + x2 = 6760000

Factor a perfect square on the left side:
(x + -6500)(x + -6500) = 6760000

Calculate the square root of the right side: 2600

Break this problem into two subproblems by setting 
(x + -6500) equal to 2600 and -2600.

Subproblem 1

x + -6500 = 2600 Simplifying x + -6500 = 2600 Reorder the terms: -6500 + x = 2600 Solving -6500 + x = 2600 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6500' to each side of the equation. -6500 + 6500 + x = 2600 + 6500 Combine like terms: -6500 + 6500 = 0 0 + x = 2600 + 6500 x = 2600 + 6500 Combine like terms: 2600 + 6500 = 9100 x = 9100 Simplifying x = 9100

Subproblem 2

x + -6500 = -2600 Simplifying x + -6500 = -2600 Reorder the terms: -6500 + x = -2600 Solving -6500 + x = -2600 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6500' to each side of the equation. -6500 + 6500 + x = -2600 + 6500 Combine like terms: -6500 + 6500 = 0 0 + x = -2600 + 6500 x = -2600 + 6500 Combine like terms: -2600 + 6500 = 3900 x = 3900 Simplifying x = 3900

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9100, 3900}

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