x^2+32x+84=0

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Solution for x^2+32x+84=0 equation:


Simplifying
x2 + 32x + 84 = 0

Reorder the terms:
84 + 32x + x2 = 0

Solving
84 + 32x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-84' to each side of the equation.
84 + 32x + -84 + x2 = 0 + -84

Reorder the terms:
84 + -84 + 32x + x2 = 0 + -84

Combine like terms: 84 + -84 = 0
0 + 32x + x2 = 0 + -84
32x + x2 = 0 + -84

Combine like terms: 0 + -84 = -84
32x + x2 = -84

The x term is 32x.  Take half its coefficient (16).
Square it (256) and add it to both sides.

Add '256' to each side of the equation.
32x + 256 + x2 = -84 + 256

Reorder the terms:
256 + 32x + x2 = -84 + 256

Combine like terms: -84 + 256 = 172
256 + 32x + x2 = 172

Factor a perfect square on the left side:
(x + 16)(x + 16) = 172

Calculate the square root of the right side: 13.114877049

Break this problem into two subproblems by setting 
(x + 16) equal to 13.114877049 and -13.114877049.

Subproblem 1

x + 16 = 13.114877049 Simplifying x + 16 = 13.114877049 Reorder the terms: 16 + x = 13.114877049 Solving 16 + x = 13.114877049 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-16' to each side of the equation. 16 + -16 + x = 13.114877049 + -16 Combine like terms: 16 + -16 = 0 0 + x = 13.114877049 + -16 x = 13.114877049 + -16 Combine like terms: 13.114877049 + -16 = -2.885122951 x = -2.885122951 Simplifying x = -2.885122951

Subproblem 2

x + 16 = -13.114877049 Simplifying x + 16 = -13.114877049 Reorder the terms: 16 + x = -13.114877049 Solving 16 + x = -13.114877049 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-16' to each side of the equation. 16 + -16 + x = -13.114877049 + -16 Combine like terms: 16 + -16 = 0 0 + x = -13.114877049 + -16 x = -13.114877049 + -16 Combine like terms: -13.114877049 + -16 = -29.114877049 x = -29.114877049 Simplifying x = -29.114877049

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-2.885122951, -29.114877049}

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