x^2+17x+1=0

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Solution for x^2+17x+1=0 equation:


Simplifying
x2 + 17x + 1 = 0

Reorder the terms:
1 + 17x + x2 = 0

Solving
1 + 17x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-1' to each side of the equation.
1 + 17x + -1 + x2 = 0 + -1

Reorder the terms:
1 + -1 + 17x + x2 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + 17x + x2 = 0 + -1
17x + x2 = 0 + -1

Combine like terms: 0 + -1 = -1
17x + x2 = -1

The x term is 17x.  Take half its coefficient (8.5).
Square it (72.25) and add it to both sides.

Add '72.25' to each side of the equation.
17x + 72.25 + x2 = -1 + 72.25

Reorder the terms:
72.25 + 17x + x2 = -1 + 72.25

Combine like terms: -1 + 72.25 = 71.25
72.25 + 17x + x2 = 71.25

Factor a perfect square on the left side:
(x + 8.5)(x + 8.5) = 71.25

Calculate the square root of the right side: 8.440971508

Break this problem into two subproblems by setting 
(x + 8.5) equal to 8.440971508 and -8.440971508.

Subproblem 1

x + 8.5 = 8.440971508 Simplifying x + 8.5 = 8.440971508 Reorder the terms: 8.5 + x = 8.440971508 Solving 8.5 + x = 8.440971508 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8.5' to each side of the equation. 8.5 + -8.5 + x = 8.440971508 + -8.5 Combine like terms: 8.5 + -8.5 = 0.0 0.0 + x = 8.440971508 + -8.5 x = 8.440971508 + -8.5 Combine like terms: 8.440971508 + -8.5 = -0.059028492 x = -0.059028492 Simplifying x = -0.059028492

Subproblem 2

x + 8.5 = -8.440971508 Simplifying x + 8.5 = -8.440971508 Reorder the terms: 8.5 + x = -8.440971508 Solving 8.5 + x = -8.440971508 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8.5' to each side of the equation. 8.5 + -8.5 + x = -8.440971508 + -8.5 Combine like terms: 8.5 + -8.5 = 0.0 0.0 + x = -8.440971508 + -8.5 x = -8.440971508 + -8.5 Combine like terms: -8.440971508 + -8.5 = -16.940971508 x = -16.940971508 Simplifying x = -16.940971508

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.059028492, -16.940971508}

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