.5x^2+8x+17=0

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Solution for .5x^2+8x+17=0 equation:


Simplifying
0.5x2 + 8x + 17 = 0

Reorder the terms:
17 + 8x + 0.5x2 = 0

Solving
17 + 8x + 0.5x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
0.5 the coefficient of the squared term: 

Divide each side by '0.5'.
34 + 16x + x2 = 0

Move the constant term to the right:

Add '-34' to each side of the equation.
34 + 16x + -34 + x2 = 0 + -34

Reorder the terms:
34 + -34 + 16x + x2 = 0 + -34

Combine like terms: 34 + -34 = 0
0 + 16x + x2 = 0 + -34
16x + x2 = 0 + -34

Combine like terms: 0 + -34 = -34
16x + x2 = -34

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 = -34 + 64

Reorder the terms:
64 + 16x + x2 = -34 + 64

Combine like terms: -34 + 64 = 30
64 + 16x + x2 = 30

Factor a perfect square on the left side:
(x + 8)(x + 8) = 30

Calculate the square root of the right side: 5.477225575

Break this problem into two subproblems by setting 
(x + 8) equal to 5.477225575 and -5.477225575.

Subproblem 1

x + 8 = 5.477225575 Simplifying x + 8 = 5.477225575 Reorder the terms: 8 + x = 5.477225575 Solving 8 + x = 5.477225575 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 = 5.477225575 + -8 Combine like terms: 8 + -8 = 0 0 + x = 5.477225575 + -8 x = 5.477225575 + -8 Combine like terms: 5.477225575 + -8 = -2.522774425 x = -2.522774425 Simplifying x = -2.522774425

Subproblem 2

x + 8 = -5.477225575 Simplifying x + 8 = -5.477225575 Reorder the terms: 8 + x = -5.477225575 Solving 8 + x = -5.477225575 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 = -5.477225575 + -8 Combine like terms: 8 + -8 = 0 0 + x = -5.477225575 + -8 x = -5.477225575 + -8 Combine like terms: -5.477225575 + -8 = -13.477225575 x = -13.477225575 Simplifying x = -13.477225575

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-2.522774425, -13.477225575}

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