530x-15000-x^2=20

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Solution for 530x-15000-x^2=20 equation:


Simplifying
530x + -15000 + -1x2 = 20

Reorder the terms:
-15000 + 530x + -1x2 = 20

Solving
-15000 + 530x + -1x2 = 20

Solving for variable 'x'.

Reorder the terms:
-15000 + -20 + 530x + -1x2 = 20 + -20

Combine like terms: -15000 + -20 = -15020
-15020 + 530x + -1x2 = 20 + -20

Combine like terms: 20 + -20 = 0
-15020 + 530x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
15020 + -530x + x2 = 0

Move the constant term to the right:

Add '-15020' to each side of the equation.
15020 + -530x + -15020 + x2 = 0 + -15020

Reorder the terms:
15020 + -15020 + -530x + x2 = 0 + -15020

Combine like terms: 15020 + -15020 = 0
0 + -530x + x2 = 0 + -15020
-530x + x2 = 0 + -15020

Combine like terms: 0 + -15020 = -15020
-530x + x2 = -15020

The x term is -530x.  Take half its coefficient (-265).
Square it (70225) and add it to both sides.

Add '70225' to each side of the equation.
-530x + 70225 + x2 = -15020 + 70225

Reorder the terms:
70225 + -530x + x2 = -15020 + 70225

Combine like terms: -15020 + 70225 = 55205
70225 + -530x + x2 = 55205

Factor a perfect square on the left side:
(x + -265)(x + -265) = 55205

Calculate the square root of the right side: 234.957442955

Break this problem into two subproblems by setting 
(x + -265) equal to 234.957442955 and -234.957442955.

Subproblem 1

x + -265 = 234.957442955 Simplifying x + -265 = 234.957442955 Reorder the terms: -265 + x = 234.957442955 Solving -265 + x = 234.957442955 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '265' to each side of the equation. -265 + 265 + x = 234.957442955 + 265 Combine like terms: -265 + 265 = 0 0 + x = 234.957442955 + 265 x = 234.957442955 + 265 Combine like terms: 234.957442955 + 265 = 499.957442955 x = 499.957442955 Simplifying x = 499.957442955

Subproblem 2

x + -265 = -234.957442955 Simplifying x + -265 = -234.957442955 Reorder the terms: -265 + x = -234.957442955 Solving -265 + x = -234.957442955 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '265' to each side of the equation. -265 + 265 + x = -234.957442955 + 265 Combine like terms: -265 + 265 = 0 0 + x = -234.957442955 + 265 x = -234.957442955 + 265 Combine like terms: -234.957442955 + 265 = 30.042557045 x = 30.042557045 Simplifying x = 30.042557045

Solution

The solution to the problem is based on the solutions from the subproblems. x = {499.957442955, 30.042557045}

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