-x^2+720x-2500=0

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Solution for -x^2+720x-2500=0 equation:


Simplifying
-1x2 + 720x + -2500 = 0

Reorder the terms:
-2500 + 720x + -1x2 = 0

Solving
-2500 + 720x + -1x2 = 0

Solving for variable 'x'.

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

Divide each side by '-1'.
2500 + -720x + x2 = 0

Move the constant term to the right:

Add '-2500' to each side of the equation.
2500 + -720x + -2500 + x2 = 0 + -2500

Reorder the terms:
2500 + -2500 + -720x + x2 = 0 + -2500

Combine like terms: 2500 + -2500 = 0
0 + -720x + x2 = 0 + -2500
-720x + x2 = 0 + -2500

Combine like terms: 0 + -2500 = -2500
-720x + x2 = -2500

The x term is -720x.  Take half its coefficient (-360).
Square it (129600) and add it to both sides.

Add '129600' to each side of the equation.
-720x + 129600 + x2 = -2500 + 129600

Reorder the terms:
129600 + -720x + x2 = -2500 + 129600

Combine like terms: -2500 + 129600 = 127100
129600 + -720x + x2 = 127100

Factor a perfect square on the left side:
(x + -360)(x + -360) = 127100

Calculate the square root of the right side: 356.5108694

Break this problem into two subproblems by setting 
(x + -360) equal to 356.5108694 and -356.5108694.

Subproblem 1

x + -360 = 356.5108694 Simplifying x + -360 = 356.5108694 Reorder the terms: -360 + x = 356.5108694 Solving -360 + x = 356.5108694 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '360' to each side of the equation. -360 + 360 + x = 356.5108694 + 360 Combine like terms: -360 + 360 = 0 0 + x = 356.5108694 + 360 x = 356.5108694 + 360 Combine like terms: 356.5108694 + 360 = 716.5108694 x = 716.5108694 Simplifying x = 716.5108694

Subproblem 2

x + -360 = -356.5108694 Simplifying x + -360 = -356.5108694 Reorder the terms: -360 + x = -356.5108694 Solving -360 + x = -356.5108694 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '360' to each side of the equation. -360 + 360 + x = -356.5108694 + 360 Combine like terms: -360 + 360 = 0 0 + x = -356.5108694 + 360 x = -356.5108694 + 360 Combine like terms: -356.5108694 + 360 = 3.4891306 x = 3.4891306 Simplifying x = 3.4891306

Solution

The solution to the problem is based on the solutions from the subproblems. x = {716.5108694, 3.4891306}

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