x^2+40x+329=0

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Solution for x^2+40x+329=0 equation:


Simplifying
x2 + 40x + 329 = 0

Reorder the terms:
329 + 40x + x2 = 0

Solving
329 + 40x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-329' to each side of the equation.
329 + 40x + -329 + x2 = 0 + -329

Reorder the terms:
329 + -329 + 40x + x2 = 0 + -329

Combine like terms: 329 + -329 = 0
0 + 40x + x2 = 0 + -329
40x + x2 = 0 + -329

Combine like terms: 0 + -329 = -329
40x + x2 = -329

The x term is 40x.  Take half its coefficient (20).
Square it (400) and add it to both sides.

Add '400' to each side of the equation.
40x + 400 + x2 = -329 + 400

Reorder the terms:
400 + 40x + x2 = -329 + 400

Combine like terms: -329 + 400 = 71
400 + 40x + x2 = 71

Factor a perfect square on the left side:
(x + 20)(x + 20) = 71

Calculate the square root of the right side: 8.426149773

Break this problem into two subproblems by setting 
(x + 20) equal to 8.426149773 and -8.426149773.

Subproblem 1

x + 20 = 8.426149773 Simplifying x + 20 = 8.426149773 Reorder the terms: 20 + x = 8.426149773 Solving 20 + x = 8.426149773 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + x = 8.426149773 + -20 Combine like terms: 20 + -20 = 0 0 + x = 8.426149773 + -20 x = 8.426149773 + -20 Combine like terms: 8.426149773 + -20 = -11.573850227 x = -11.573850227 Simplifying x = -11.573850227

Subproblem 2

x + 20 = -8.426149773 Simplifying x + 20 = -8.426149773 Reorder the terms: 20 + x = -8.426149773 Solving 20 + x = -8.426149773 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + x = -8.426149773 + -20 Combine like terms: 20 + -20 = 0 0 + x = -8.426149773 + -20 x = -8.426149773 + -20 Combine like terms: -8.426149773 + -20 = -28.426149773 x = -28.426149773 Simplifying x = -28.426149773

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-11.573850227, -28.426149773}

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