213882.41=x^2+177.97x

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Solution for 213882.41=x^2+177.97x equation:


Simplifying
213882.41 = x2 + 177.97x

Reorder the terms:
213882.41 = 177.97x + x2

Solving
213882.41 = 177.97x + x2

Solving for variable 'x'.

Reorder the terms:
213882.41 + -177.97x + -1x2 = 177.97x + -177.97x + x2 + -1x2

Combine like terms: 177.97x + -177.97x = 0.00
213882.41 + -177.97x + -1x2 = 0.00 + x2 + -1x2
213882.41 + -177.97x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
213882.41 + -177.97x + -1x2 = 0

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

Divide each side by '-1'.
-213882.41 + 177.97x + x2 = 0

Move the constant term to the right:

Add '213882.41' to each side of the equation.
-213882.41 + 177.97x + 213882.41 + x2 = 0 + 213882.41

Reorder the terms:
-213882.41 + 213882.41 + 177.97x + x2 = 0 + 213882.41

Combine like terms: -213882.41 + 213882.41 = 0.00
0.00 + 177.97x + x2 = 0 + 213882.41
177.97x + x2 = 0 + 213882.41

Combine like terms: 0 + 213882.41 = 213882.41
177.97x + x2 = 213882.41

The x term is 177.97x.  Take half its coefficient (88.985).
Square it (7918.330225) and add it to both sides.

Add '7918.330225' to each side of the equation.
177.97x + 7918.330225 + x2 = 213882.41 + 7918.330225

Reorder the terms:
7918.330225 + 177.97x + x2 = 213882.41 + 7918.330225

Combine like terms: 213882.41 + 7918.330225 = 221800.740225
7918.330225 + 177.97x + x2 = 221800.740225

Factor a perfect square on the left side:
(x + 88.985)(x + 88.985) = 221800.740225

Calculate the square root of the right side: 470.957259446

Break this problem into two subproblems by setting 
(x + 88.985) equal to 470.957259446 and -470.957259446.

Subproblem 1

x + 88.985 = 470.957259446 Simplifying x + 88.985 = 470.957259446 Reorder the terms: 88.985 + x = 470.957259446 Solving 88.985 + x = 470.957259446 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-88.985' to each side of the equation. 88.985 + -88.985 + x = 470.957259446 + -88.985 Combine like terms: 88.985 + -88.985 = 0.000 0.000 + x = 470.957259446 + -88.985 x = 470.957259446 + -88.985 Combine like terms: 470.957259446 + -88.985 = 381.972259446 x = 381.972259446 Simplifying x = 381.972259446

Subproblem 2

x + 88.985 = -470.957259446 Simplifying x + 88.985 = -470.957259446 Reorder the terms: 88.985 + x = -470.957259446 Solving 88.985 + x = -470.957259446 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-88.985' to each side of the equation. 88.985 + -88.985 + x = -470.957259446 + -88.985 Combine like terms: 88.985 + -88.985 = 0.000 0.000 + x = -470.957259446 + -88.985 x = -470.957259446 + -88.985 Combine like terms: -470.957259446 + -88.985 = -559.942259446 x = -559.942259446 Simplifying x = -559.942259446

Solution

The solution to the problem is based on the solutions from the subproblems. x = {381.972259446, -559.942259446}

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