5x^2+56x-192=0

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Solution for 5x^2+56x-192=0 equation:


Simplifying
5x2 + 56x + -192 = 0

Reorder the terms:
-192 + 56x + 5x2 = 0

Solving
-192 + 56x + 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 + 11.2x + x2 = 0

Move the constant term to the right:

Add '38.4' to each side of the equation.
-38.4 + 11.2x + 38.4 + x2 = 0 + 38.4

Reorder the terms:
-38.4 + 38.4 + 11.2x + x2 = 0 + 38.4

Combine like terms: -38.4 + 38.4 = 0.0
0.0 + 11.2x + x2 = 0 + 38.4
11.2x + x2 = 0 + 38.4

Combine like terms: 0 + 38.4 = 38.4
11.2x + x2 = 38.4

The x term is 11.2x.  Take half its coefficient (5.6).
Square it (31.36) and add it to both sides.

Add '31.36' to each side of the equation.
11.2x + 31.36 + x2 = 38.4 + 31.36

Reorder the terms:
31.36 + 11.2x + x2 = 38.4 + 31.36

Combine like terms: 38.4 + 31.36 = 69.76
31.36 + 11.2x + x2 = 69.76

Factor a perfect square on the left side:
(x + 5.6)(x + 5.6) = 69.76

Calculate the square root of the right side: 8.352245207

Break this problem into two subproblems by setting 
(x + 5.6) equal to 8.352245207 and -8.352245207.

Subproblem 1

x + 5.6 = 8.352245207 Simplifying x + 5.6 = 8.352245207 Reorder the terms: 5.6 + x = 8.352245207 Solving 5.6 + x = 8.352245207 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5.6' to each side of the equation. 5.6 + -5.6 + x = 8.352245207 + -5.6 Combine like terms: 5.6 + -5.6 = 0.0 0.0 + x = 8.352245207 + -5.6 x = 8.352245207 + -5.6 Combine like terms: 8.352245207 + -5.6 = 2.752245207 x = 2.752245207 Simplifying x = 2.752245207

Subproblem 2

x + 5.6 = -8.352245207 Simplifying x + 5.6 = -8.352245207 Reorder the terms: 5.6 + x = -8.352245207 Solving 5.6 + x = -8.352245207 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5.6' to each side of the equation. 5.6 + -5.6 + x = -8.352245207 + -5.6 Combine like terms: 5.6 + -5.6 = 0.0 0.0 + x = -8.352245207 + -5.6 x = -8.352245207 + -5.6 Combine like terms: -8.352245207 + -5.6 = -13.952245207 x = -13.952245207 Simplifying x = -13.952245207

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.752245207, -13.952245207}

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