240+57x-x^2=0

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Solution for 240+57x-x^2=0 equation:


Simplifying
240 + 57x + -1x2 = 0

Solving
240 + 57x + -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'.
-240 + -57x + x2 = 0

Move the constant term to the right:

Add '240' to each side of the equation.
-240 + -57x + 240 + x2 = 0 + 240

Reorder the terms:
-240 + 240 + -57x + x2 = 0 + 240

Combine like terms: -240 + 240 = 0
0 + -57x + x2 = 0 + 240
-57x + x2 = 0 + 240

Combine like terms: 0 + 240 = 240
-57x + x2 = 240

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 = 240 + 812.25

Reorder the terms:
812.25 + -57x + x2 = 240 + 812.25

Combine like terms: 240 + 812.25 = 1052.25
812.25 + -57x + x2 = 1052.25

Factor a perfect square on the left side:
(x + -28.5)(x + -28.5) = 1052.25

Calculate the square root of the right side: 32.438403167

Break this problem into two subproblems by setting 
(x + -28.5) equal to 32.438403167 and -32.438403167.

Subproblem 1

x + -28.5 = 32.438403167 Simplifying x + -28.5 = 32.438403167 Reorder the terms: -28.5 + x = 32.438403167 Solving -28.5 + x = 32.438403167 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 = 32.438403167 + 28.5 Combine like terms: -28.5 + 28.5 = 0.0 0.0 + x = 32.438403167 + 28.5 x = 32.438403167 + 28.5 Combine like terms: 32.438403167 + 28.5 = 60.938403167 x = 60.938403167 Simplifying x = 60.938403167

Subproblem 2

x + -28.5 = -32.438403167 Simplifying x + -28.5 = -32.438403167 Reorder the terms: -28.5 + x = -32.438403167 Solving -28.5 + x = -32.438403167 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 = -32.438403167 + 28.5 Combine like terms: -28.5 + 28.5 = 0.0 0.0 + x = -32.438403167 + 28.5 x = -32.438403167 + 28.5 Combine like terms: -32.438403167 + 28.5 = -3.938403167 x = -3.938403167 Simplifying x = -3.938403167

Solution

The solution to the problem is based on the solutions from the subproblems. x = {60.938403167, -3.938403167}

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