5x^2+56x+27=0

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Solution for 5x^2+56x+27=0 equation:


Simplifying
5x2 + 56x + 27 = 0

Reorder the terms:
27 + 56x + 5x2 = 0

Solving
27 + 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'.
5.4 + 11.2x + x2 = 0

Move the constant term to the right:

Add '-5.4' to each side of the equation.
5.4 + 11.2x + -5.4 + x2 = 0 + -5.4

Reorder the terms:
5.4 + -5.4 + 11.2x + x2 = 0 + -5.4

Combine like terms: 5.4 + -5.4 = 0.0
0.0 + 11.2x + x2 = 0 + -5.4
11.2x + x2 = 0 + -5.4

Combine like terms: 0 + -5.4 = -5.4
11.2x + x2 = -5.4

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 = -5.4 + 31.36

Reorder the terms:
31.36 + 11.2x + x2 = -5.4 + 31.36

Combine like terms: -5.4 + 31.36 = 25.96
31.36 + 11.2x + x2 = 25.96

Factor a perfect square on the left side:
(x + 5.6)(x + 5.6) = 25.96

Calculate the square root of the right side: 5.095095681

Break this problem into two subproblems by setting 
(x + 5.6) equal to 5.095095681 and -5.095095681.

Subproblem 1

x + 5.6 = 5.095095681 Simplifying x + 5.6 = 5.095095681 Reorder the terms: 5.6 + x = 5.095095681 Solving 5.6 + x = 5.095095681 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 = 5.095095681 + -5.6 Combine like terms: 5.6 + -5.6 = 0.0 0.0 + x = 5.095095681 + -5.6 x = 5.095095681 + -5.6 Combine like terms: 5.095095681 + -5.6 = -0.504904319 x = -0.504904319 Simplifying x = -0.504904319

Subproblem 2

x + 5.6 = -5.095095681 Simplifying x + 5.6 = -5.095095681 Reorder the terms: 5.6 + x = -5.095095681 Solving 5.6 + x = -5.095095681 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 = -5.095095681 + -5.6 Combine like terms: 5.6 + -5.6 = 0.0 0.0 + x = -5.095095681 + -5.6 x = -5.095095681 + -5.6 Combine like terms: -5.095095681 + -5.6 = -10.695095681 x = -10.695095681 Simplifying x = -10.695095681

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.504904319, -10.695095681}

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