8x^2+24x=-17

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Solution for 8x^2+24x=-17 equation:


Simplifying
8x2 + 24x = -17

Reorder the terms:
24x + 8x2 = -17

Solving
24x + 8x2 = -17

Solving for variable 'x'.

Reorder the terms:
17 + 24x + 8x2 = -17 + 17

Combine like terms: -17 + 17 = 0
17 + 24x + 8x2 = 0

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

Divide each side by '8'.
2.125 + 3x + x2 = 0

Move the constant term to the right:

Add '-2.125' to each side of the equation.
2.125 + 3x + -2.125 + x2 = 0 + -2.125

Reorder the terms:
2.125 + -2.125 + 3x + x2 = 0 + -2.125

Combine like terms: 2.125 + -2.125 = 0.000
0.000 + 3x + x2 = 0 + -2.125
3x + x2 = 0 + -2.125

Combine like terms: 0 + -2.125 = -2.125
3x + x2 = -2.125

The x term is 3x.  Take half its coefficient (1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
3x + 2.25 + x2 = -2.125 + 2.25

Reorder the terms:
2.25 + 3x + x2 = -2.125 + 2.25

Combine like terms: -2.125 + 2.25 = 0.125
2.25 + 3x + x2 = 0.125

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = 0.125

Calculate the square root of the right side: 0.353553391

Break this problem into two subproblems by setting 
(x + 1.5) equal to 0.353553391 and -0.353553391.

Subproblem 1

x + 1.5 = 0.353553391 Simplifying x + 1.5 = 0.353553391 Reorder the terms: 1.5 + x = 0.353553391 Solving 1.5 + x = 0.353553391 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = 0.353553391 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 0.353553391 + -1.5 x = 0.353553391 + -1.5 Combine like terms: 0.353553391 + -1.5 = -1.146446609 x = -1.146446609 Simplifying x = -1.146446609

Subproblem 2

x + 1.5 = -0.353553391 Simplifying x + 1.5 = -0.353553391 Reorder the terms: 1.5 + x = -0.353553391 Solving 1.5 + x = -0.353553391 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = -0.353553391 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -0.353553391 + -1.5 x = -0.353553391 + -1.5 Combine like terms: -0.353553391 + -1.5 = -1.853553391 x = -1.853553391 Simplifying x = -1.853553391

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-1.146446609, -1.853553391}

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