218.25+69x+x^2=0

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Solution for 218.25+69x+x^2=0 equation:


Simplifying
218.25 + 69x + x2 = 0

Solving
218.25 + 69x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-218.25' to each side of the equation.
218.25 + 69x + -218.25 + x2 = 0 + -218.25

Reorder the terms:
218.25 + -218.25 + 69x + x2 = 0 + -218.25

Combine like terms: 218.25 + -218.25 = 0.00
0.00 + 69x + x2 = 0 + -218.25
69x + x2 = 0 + -218.25

Combine like terms: 0 + -218.25 = -218.25
69x + x2 = -218.25

The x term is 69x.  Take half its coefficient (34.5).
Square it (1190.25) and add it to both sides.

Add '1190.25' to each side of the equation.
69x + 1190.25 + x2 = -218.25 + 1190.25

Reorder the terms:
1190.25 + 69x + x2 = -218.25 + 1190.25

Combine like terms: -218.25 + 1190.25 = 972
1190.25 + 69x + x2 = 972

Factor a perfect square on the left side:
(x + 34.5)(x + 34.5) = 972

Calculate the square root of the right side: 31.176914536

Break this problem into two subproblems by setting 
(x + 34.5) equal to 31.176914536 and -31.176914536.

Subproblem 1

x + 34.5 = 31.176914536 Simplifying x + 34.5 = 31.176914536 Reorder the terms: 34.5 + x = 31.176914536 Solving 34.5 + x = 31.176914536 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-34.5' to each side of the equation. 34.5 + -34.5 + x = 31.176914536 + -34.5 Combine like terms: 34.5 + -34.5 = 0.0 0.0 + x = 31.176914536 + -34.5 x = 31.176914536 + -34.5 Combine like terms: 31.176914536 + -34.5 = -3.323085464 x = -3.323085464 Simplifying x = -3.323085464

Subproblem 2

x + 34.5 = -31.176914536 Simplifying x + 34.5 = -31.176914536 Reorder the terms: 34.5 + x = -31.176914536 Solving 34.5 + x = -31.176914536 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-34.5' to each side of the equation. 34.5 + -34.5 + x = -31.176914536 + -34.5 Combine like terms: 34.5 + -34.5 = 0.0 0.0 + x = -31.176914536 + -34.5 x = -31.176914536 + -34.5 Combine like terms: -31.176914536 + -34.5 = -65.676914536 x = -65.676914536 Simplifying x = -65.676914536

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-3.323085464, -65.676914536}

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