0=x^2+155x-576600

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Solution for 0=x^2+155x-576600 equation:


Simplifying
0 = x2 + 155x + -576600

Reorder the terms:
0 = -576600 + 155x + x2

Solving
0 = -576600 + 155x + x2

Solving for variable 'x'.

Combine like terms: 0 + 576600 = 576600
576600 + -155x + -1x2 = -576600 + 155x + x2 + 576600 + -155x + -1x2

Reorder the terms:
576600 + -155x + -1x2 = -576600 + 576600 + 155x + -155x + x2 + -1x2

Combine like terms: -576600 + 576600 = 0
576600 + -155x + -1x2 = 0 + 155x + -155x + x2 + -1x2
576600 + -155x + -1x2 = 155x + -155x + x2 + -1x2

Combine like terms: 155x + -155x = 0
576600 + -155x + -1x2 = 0 + x2 + -1x2
576600 + -155x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
576600 + -155x + -1x2 = 0

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

Divide each side by '-1'.
-576600 + 155x + x2 = 0

Move the constant term to the right:

Add '576600' to each side of the equation.
-576600 + 155x + 576600 + x2 = 0 + 576600

Reorder the terms:
-576600 + 576600 + 155x + x2 = 0 + 576600

Combine like terms: -576600 + 576600 = 0
0 + 155x + x2 = 0 + 576600
155x + x2 = 0 + 576600

Combine like terms: 0 + 576600 = 576600
155x + x2 = 576600

The x term is 155x.  Take half its coefficient (77.5).
Square it (6006.25) and add it to both sides.

Add '6006.25' to each side of the equation.
155x + 6006.25 + x2 = 576600 + 6006.25

Reorder the terms:
6006.25 + 155x + x2 = 576600 + 6006.25

Combine like terms: 576600 + 6006.25 = 582606.25
6006.25 + 155x + x2 = 582606.25

Factor a perfect square on the left side:
(x + 77.5)(x + 77.5) = 582606.25

Calculate the square root of the right side: 763.286479639

Break this problem into two subproblems by setting 
(x + 77.5) equal to 763.286479639 and -763.286479639.

Subproblem 1

x + 77.5 = 763.286479639 Simplifying x + 77.5 = 763.286479639 Reorder the terms: 77.5 + x = 763.286479639 Solving 77.5 + x = 763.286479639 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-77.5' to each side of the equation. 77.5 + -77.5 + x = 763.286479639 + -77.5 Combine like terms: 77.5 + -77.5 = 0.0 0.0 + x = 763.286479639 + -77.5 x = 763.286479639 + -77.5 Combine like terms: 763.286479639 + -77.5 = 685.786479639 x = 685.786479639 Simplifying x = 685.786479639

Subproblem 2

x + 77.5 = -763.286479639 Simplifying x + 77.5 = -763.286479639 Reorder the terms: 77.5 + x = -763.286479639 Solving 77.5 + x = -763.286479639 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-77.5' to each side of the equation. 77.5 + -77.5 + x = -763.286479639 + -77.5 Combine like terms: 77.5 + -77.5 = 0.0 0.0 + x = -763.286479639 + -77.5 x = -763.286479639 + -77.5 Combine like terms: -763.286479639 + -77.5 = -840.786479639 x = -840.786479639 Simplifying x = -840.786479639

Solution

The solution to the problem is based on the solutions from the subproblems. x = {685.786479639, -840.786479639}

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