x^2-480x-4000=0

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Solution for x^2-480x-4000=0 equation:


Simplifying
x2 + -480x + -4000 = 0

Reorder the terms:
-4000 + -480x + x2 = 0

Solving
-4000 + -480x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '4000' to each side of the equation.
-4000 + -480x + 4000 + x2 = 0 + 4000

Reorder the terms:
-4000 + 4000 + -480x + x2 = 0 + 4000

Combine like terms: -4000 + 4000 = 0
0 + -480x + x2 = 0 + 4000
-480x + x2 = 0 + 4000

Combine like terms: 0 + 4000 = 4000
-480x + x2 = 4000

The x term is -480x.  Take half its coefficient (-240).
Square it (57600) and add it to both sides.

Add '57600' to each side of the equation.
-480x + 57600 + x2 = 4000 + 57600

Reorder the terms:
57600 + -480x + x2 = 4000 + 57600

Combine like terms: 4000 + 57600 = 61600
57600 + -480x + x2 = 61600

Factor a perfect square on the left side:
(x + -240)(x + -240) = 61600

Calculate the square root of the right side: 248.19347292

Break this problem into two subproblems by setting 
(x + -240) equal to 248.19347292 and -248.19347292.

Subproblem 1

x + -240 = 248.19347292 Simplifying x + -240 = 248.19347292 Reorder the terms: -240 + x = 248.19347292 Solving -240 + x = 248.19347292 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '240' to each side of the equation. -240 + 240 + x = 248.19347292 + 240 Combine like terms: -240 + 240 = 0 0 + x = 248.19347292 + 240 x = 248.19347292 + 240 Combine like terms: 248.19347292 + 240 = 488.19347292 x = 488.19347292 Simplifying x = 488.19347292

Subproblem 2

x + -240 = -248.19347292 Simplifying x + -240 = -248.19347292 Reorder the terms: -240 + x = -248.19347292 Solving -240 + x = -248.19347292 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '240' to each side of the equation. -240 + 240 + x = -248.19347292 + 240 Combine like terms: -240 + 240 = 0 0 + x = -248.19347292 + 240 x = -248.19347292 + 240 Combine like terms: -248.19347292 + 240 = -8.19347292 x = -8.19347292 Simplifying x = -8.19347292

Solution

The solution to the problem is based on the solutions from the subproblems. x = {488.19347292, -8.19347292}

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