x^2+156x-572=0

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Solution for x^2+156x-572=0 equation:


Simplifying
x2 + 156x + -572 = 0

Reorder the terms:
-572 + 156x + x2 = 0

Solving
-572 + 156x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '572' to each side of the equation.
-572 + 156x + 572 + x2 = 0 + 572

Reorder the terms:
-572 + 572 + 156x + x2 = 0 + 572

Combine like terms: -572 + 572 = 0
0 + 156x + x2 = 0 + 572
156x + x2 = 0 + 572

Combine like terms: 0 + 572 = 572
156x + x2 = 572

The x term is 156x.  Take half its coefficient (78).
Square it (6084) and add it to both sides.

Add '6084' to each side of the equation.
156x + 6084 + x2 = 572 + 6084

Reorder the terms:
6084 + 156x + x2 = 572 + 6084

Combine like terms: 572 + 6084 = 6656
6084 + 156x + x2 = 6656

Factor a perfect square on the left side:
(x + 78)(x + 78) = 6656

Calculate the square root of the right side: 81.584312217

Break this problem into two subproblems by setting 
(x + 78) equal to 81.584312217 and -81.584312217.

Subproblem 1

x + 78 = 81.584312217 Simplifying x + 78 = 81.584312217 Reorder the terms: 78 + x = 81.584312217 Solving 78 + x = 81.584312217 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-78' to each side of the equation. 78 + -78 + x = 81.584312217 + -78 Combine like terms: 78 + -78 = 0 0 + x = 81.584312217 + -78 x = 81.584312217 + -78 Combine like terms: 81.584312217 + -78 = 3.584312217 x = 3.584312217 Simplifying x = 3.584312217

Subproblem 2

x + 78 = -81.584312217 Simplifying x + 78 = -81.584312217 Reorder the terms: 78 + x = -81.584312217 Solving 78 + x = -81.584312217 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-78' to each side of the equation. 78 + -78 + x = -81.584312217 + -78 Combine like terms: 78 + -78 = 0 0 + x = -81.584312217 + -78 x = -81.584312217 + -78 Combine like terms: -81.584312217 + -78 = -159.584312217 x = -159.584312217 Simplifying x = -159.584312217

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.584312217, -159.584312217}

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