x^2-57x+216=0

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Solution for x^2-57x+216=0 equation:


Simplifying
x2 + -57x + 216 = 0

Reorder the terms:
216 + -57x + x2 = 0

Solving
216 + -57x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-216' to each side of the equation.
216 + -57x + -216 + x2 = 0 + -216

Reorder the terms:
216 + -216 + -57x + x2 = 0 + -216

Combine like terms: 216 + -216 = 0
0 + -57x + x2 = 0 + -216
-57x + x2 = 0 + -216

Combine like terms: 0 + -216 = -216
-57x + x2 = -216

The x term is -57x.  Take half its coefficient (-28.5).
Square it (812.25) and add it to both sides.

Add '812.25' to each side of the equation.
-57x + 812.25 + x2 = -216 + 812.25

Reorder the terms:
812.25 + -57x + x2 = -216 + 812.25

Combine like terms: -216 + 812.25 = 596.25
812.25 + -57x + x2 = 596.25

Factor a perfect square on the left side:
(x + -28.5)(x + -28.5) = 596.25

Calculate the square root of the right side: 24.418230894

Break this problem into two subproblems by setting 
(x + -28.5) equal to 24.418230894 and -24.418230894.

Subproblem 1

x + -28.5 = 24.418230894 Simplifying x + -28.5 = 24.418230894 Reorder the terms: -28.5 + x = 24.418230894 Solving -28.5 + x = 24.418230894 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '28.5' to each side of the equation. -28.5 + 28.5 + x = 24.418230894 + 28.5 Combine like terms: -28.5 + 28.5 = 0.0 0.0 + x = 24.418230894 + 28.5 x = 24.418230894 + 28.5 Combine like terms: 24.418230894 + 28.5 = 52.918230894 x = 52.918230894 Simplifying x = 52.918230894

Subproblem 2

x + -28.5 = -24.418230894 Simplifying x + -28.5 = -24.418230894 Reorder the terms: -28.5 + x = -24.418230894 Solving -28.5 + x = -24.418230894 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '28.5' to each side of the equation. -28.5 + 28.5 + x = -24.418230894 + 28.5 Combine like terms: -28.5 + 28.5 = 0.0 0.0 + x = -24.418230894 + 28.5 x = -24.418230894 + 28.5 Combine like terms: -24.418230894 + 28.5 = 4.081769106 x = 4.081769106 Simplifying x = 4.081769106

Solution

The solution to the problem is based on the solutions from the subproblems. x = {52.918230894, 4.081769106}

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