5x^2+8x-192=0

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Solution for 5x^2+8x-192=0 equation:


Simplifying
5x2 + 8x + -192 = 0

Reorder the terms:
-192 + 8x + 5x2 = 0

Solving
-192 + 8x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
-38.4 + 1.6x + x2 = 0

Move the constant term to the right:

Add '38.4' to each side of the equation.
-38.4 + 1.6x + 38.4 + x2 = 0 + 38.4

Reorder the terms:
-38.4 + 38.4 + 1.6x + x2 = 0 + 38.4

Combine like terms: -38.4 + 38.4 = 0.0
0.0 + 1.6x + x2 = 0 + 38.4
1.6x + x2 = 0 + 38.4

Combine like terms: 0 + 38.4 = 38.4
1.6x + x2 = 38.4

The x term is 1.6x.  Take half its coefficient (0.8).
Square it (0.64) and add it to both sides.

Add '0.64' to each side of the equation.
1.6x + 0.64 + x2 = 38.4 + 0.64

Reorder the terms:
0.64 + 1.6x + x2 = 38.4 + 0.64

Combine like terms: 38.4 + 0.64 = 39.04
0.64 + 1.6x + x2 = 39.04

Factor a perfect square on the left side:
(x + 0.8)(x + 0.8) = 39.04

Calculate the square root of the right side: 6.248199741

Break this problem into two subproblems by setting 
(x + 0.8) equal to 6.248199741 and -6.248199741.

Subproblem 1

x + 0.8 = 6.248199741 Simplifying x + 0.8 = 6.248199741 Reorder the terms: 0.8 + x = 6.248199741 Solving 0.8 + x = 6.248199741 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.8' to each side of the equation. 0.8 + -0.8 + x = 6.248199741 + -0.8 Combine like terms: 0.8 + -0.8 = 0.0 0.0 + x = 6.248199741 + -0.8 x = 6.248199741 + -0.8 Combine like terms: 6.248199741 + -0.8 = 5.448199741 x = 5.448199741 Simplifying x = 5.448199741

Subproblem 2

x + 0.8 = -6.248199741 Simplifying x + 0.8 = -6.248199741 Reorder the terms: 0.8 + x = -6.248199741 Solving 0.8 + x = -6.248199741 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.8' to each side of the equation. 0.8 + -0.8 + x = -6.248199741 + -0.8 Combine like terms: 0.8 + -0.8 = 0.0 0.0 + x = -6.248199741 + -0.8 x = -6.248199741 + -0.8 Combine like terms: -6.248199741 + -0.8 = -7.048199741 x = -7.048199741 Simplifying x = -7.048199741

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.448199741, -7.048199741}

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