x(115+x)=570

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Solution for x(115+x)=570 equation:


Simplifying
x(115 + x) = 570
(115 * x + x * x) = 570
(115x + x2) = 570

Solving
115x + x2 = 570

Solving for variable 'x'.

Reorder the terms:
-570 + 115x + x2 = 570 + -570

Combine like terms: 570 + -570 = 0
-570 + 115x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '570' to each side of the equation.
-570 + 115x + 570 + x2 = 0 + 570

Reorder the terms:
-570 + 570 + 115x + x2 = 0 + 570

Combine like terms: -570 + 570 = 0
0 + 115x + x2 = 0 + 570
115x + x2 = 0 + 570

Combine like terms: 0 + 570 = 570
115x + x2 = 570

The x term is 115x.  Take half its coefficient (57.5).
Square it (3306.25) and add it to both sides.

Add '3306.25' to each side of the equation.
115x + 3306.25 + x2 = 570 + 3306.25

Reorder the terms:
3306.25 + 115x + x2 = 570 + 3306.25

Combine like terms: 570 + 3306.25 = 3876.25
3306.25 + 115x + x2 = 3876.25

Factor a perfect square on the left side:
(x + 57.5)(x + 57.5) = 3876.25

Calculate the square root of the right side: 62.259537422

Break this problem into two subproblems by setting 
(x + 57.5) equal to 62.259537422 and -62.259537422.

Subproblem 1

x + 57.5 = 62.259537422 Simplifying x + 57.5 = 62.259537422 Reorder the terms: 57.5 + x = 62.259537422 Solving 57.5 + x = 62.259537422 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-57.5' to each side of the equation. 57.5 + -57.5 + x = 62.259537422 + -57.5 Combine like terms: 57.5 + -57.5 = 0.0 0.0 + x = 62.259537422 + -57.5 x = 62.259537422 + -57.5 Combine like terms: 62.259537422 + -57.5 = 4.759537422 x = 4.759537422 Simplifying x = 4.759537422

Subproblem 2

x + 57.5 = -62.259537422 Simplifying x + 57.5 = -62.259537422 Reorder the terms: 57.5 + x = -62.259537422 Solving 57.5 + x = -62.259537422 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-57.5' to each side of the equation. 57.5 + -57.5 + x = -62.259537422 + -57.5 Combine like terms: 57.5 + -57.5 = 0.0 0.0 + x = -62.259537422 + -57.5 x = -62.259537422 + -57.5 Combine like terms: -62.259537422 + -57.5 = -119.759537422 x = -119.759537422 Simplifying x = -119.759537422

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.759537422, -119.759537422}

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