x^2+16*x+17=0

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Solution for x^2+16*x+17=0 equation:


Simplifying
x2 + 16x + 17 = 0

Reorder the terms:
17 + 16x + x2 = 0

Solving
17 + 16x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-17' to each side of the equation.
17 + 16x + -17 + x2 = 0 + -17

Reorder the terms:
17 + -17 + 16x + x2 = 0 + -17

Combine like terms: 17 + -17 = 0
0 + 16x + x2 = 0 + -17
16x + x2 = 0 + -17

Combine like terms: 0 + -17 = -17
16x + x2 = -17

The x term is 16x.  Take half its coefficient (8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
16x + 64 + x2 = -17 + 64

Reorder the terms:
64 + 16x + x2 = -17 + 64

Combine like terms: -17 + 64 = 47
64 + 16x + x2 = 47

Factor a perfect square on the left side:
(x + 8)(x + 8) = 47

Calculate the square root of the right side: 6.8556546

Break this problem into two subproblems by setting 
(x + 8) equal to 6.8556546 and -6.8556546.

Subproblem 1

x + 8 = 6.8556546 Simplifying x + 8 = 6.8556546 Reorder the terms: 8 + x = 6.8556546 Solving 8 + x = 6.8556546 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + x = 6.8556546 + -8 Combine like terms: 8 + -8 = 0 0 + x = 6.8556546 + -8 x = 6.8556546 + -8 Combine like terms: 6.8556546 + -8 = -1.1443454 x = -1.1443454 Simplifying x = -1.1443454

Subproblem 2

x + 8 = -6.8556546 Simplifying x + 8 = -6.8556546 Reorder the terms: 8 + x = -6.8556546 Solving 8 + x = -6.8556546 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + x = -6.8556546 + -8 Combine like terms: 8 + -8 = 0 0 + x = -6.8556546 + -8 x = -6.8556546 + -8 Combine like terms: -6.8556546 + -8 = -14.8556546 x = -14.8556546 Simplifying x = -14.8556546

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-1.1443454, -14.8556546}

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