x^2+33x+31=0

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Solution for x^2+33x+31=0 equation:


Simplifying
x2 + 33x + 31 = 0

Reorder the terms:
31 + 33x + x2 = 0

Solving
31 + 33x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-31' to each side of the equation.
31 + 33x + -31 + x2 = 0 + -31

Reorder the terms:
31 + -31 + 33x + x2 = 0 + -31

Combine like terms: 31 + -31 = 0
0 + 33x + x2 = 0 + -31
33x + x2 = 0 + -31

Combine like terms: 0 + -31 = -31
33x + x2 = -31

The x term is 33x.  Take half its coefficient (16.5).
Square it (272.25) and add it to both sides.

Add '272.25' to each side of the equation.
33x + 272.25 + x2 = -31 + 272.25

Reorder the terms:
272.25 + 33x + x2 = -31 + 272.25

Combine like terms: -31 + 272.25 = 241.25
272.25 + 33x + x2 = 241.25

Factor a perfect square on the left side:
(x + 16.5)(x + 16.5) = 241.25

Calculate the square root of the right side: 15.532224567

Break this problem into two subproblems by setting 
(x + 16.5) equal to 15.532224567 and -15.532224567.

Subproblem 1

x + 16.5 = 15.532224567 Simplifying x + 16.5 = 15.532224567 Reorder the terms: 16.5 + x = 15.532224567 Solving 16.5 + x = 15.532224567 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-16.5' to each side of the equation. 16.5 + -16.5 + x = 15.532224567 + -16.5 Combine like terms: 16.5 + -16.5 = 0.0 0.0 + x = 15.532224567 + -16.5 x = 15.532224567 + -16.5 Combine like terms: 15.532224567 + -16.5 = -0.967775433 x = -0.967775433 Simplifying x = -0.967775433

Subproblem 2

x + 16.5 = -15.532224567 Simplifying x + 16.5 = -15.532224567 Reorder the terms: 16.5 + x = -15.532224567 Solving 16.5 + x = -15.532224567 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-16.5' to each side of the equation. 16.5 + -16.5 + x = -15.532224567 + -16.5 Combine like terms: 16.5 + -16.5 = 0.0 0.0 + x = -15.532224567 + -16.5 x = -15.532224567 + -16.5 Combine like terms: -15.532224567 + -16.5 = -32.032224567 x = -32.032224567 Simplifying x = -32.032224567

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.967775433, -32.032224567}

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