x^2+30x-500=0

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Solution for x^2+30x-500=0 equation:


Simplifying
x2 + 30x + -500 = 0

Reorder the terms:
-500 + 30x + x2 = 0

Solving
-500 + 30x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '500' to each side of the equation.
-500 + 30x + 500 + x2 = 0 + 500

Reorder the terms:
-500 + 500 + 30x + x2 = 0 + 500

Combine like terms: -500 + 500 = 0
0 + 30x + x2 = 0 + 500
30x + x2 = 0 + 500

Combine like terms: 0 + 500 = 500
30x + x2 = 500

The x term is 30x.  Take half its coefficient (15).
Square it (225) and add it to both sides.

Add '225' to each side of the equation.
30x + 225 + x2 = 500 + 225

Reorder the terms:
225 + 30x + x2 = 500 + 225

Combine like terms: 500 + 225 = 725
225 + 30x + x2 = 725

Factor a perfect square on the left side:
(x + 15)(x + 15) = 725

Calculate the square root of the right side: 26.925824036

Break this problem into two subproblems by setting 
(x + 15) equal to 26.925824036 and -26.925824036.

Subproblem 1

x + 15 = 26.925824036 Simplifying x + 15 = 26.925824036 Reorder the terms: 15 + x = 26.925824036 Solving 15 + x = 26.925824036 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + x = 26.925824036 + -15 Combine like terms: 15 + -15 = 0 0 + x = 26.925824036 + -15 x = 26.925824036 + -15 Combine like terms: 26.925824036 + -15 = 11.925824036 x = 11.925824036 Simplifying x = 11.925824036

Subproblem 2

x + 15 = -26.925824036 Simplifying x + 15 = -26.925824036 Reorder the terms: 15 + x = -26.925824036 Solving 15 + x = -26.925824036 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + x = -26.925824036 + -15 Combine like terms: 15 + -15 = 0 0 + x = -26.925824036 + -15 x = -26.925824036 + -15 Combine like terms: -26.925824036 + -15 = -41.925824036 x = -41.925824036 Simplifying x = -41.925824036

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.925824036, -41.925824036}

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