27x^2-39x+8=0

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Solution for 27x^2-39x+8=0 equation:


Simplifying
27x2 + -39x + 8 = 0

Reorder the terms:
8 + -39x + 27x2 = 0

Solving
8 + -39x + 27x2 = 0

Solving for variable 'x'.

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

Divide each side by '27'.
0.2962962963 + -1.444444444x + x2 = 0

Move the constant term to the right:

Add '-0.2962962963' to each side of the equation.
0.2962962963 + -1.444444444x + -0.2962962963 + x2 = 0 + -0.2962962963

Reorder the terms:
0.2962962963 + -0.2962962963 + -1.444444444x + x2 = 0 + -0.2962962963

Combine like terms: 0.2962962963 + -0.2962962963 = 0.0000000000
0.0000000000 + -1.444444444x + x2 = 0 + -0.2962962963
-1.444444444x + x2 = 0 + -0.2962962963

Combine like terms: 0 + -0.2962962963 = -0.2962962963
-1.444444444x + x2 = -0.2962962963

The x term is -1.444444444x.  Take half its coefficient (-0.722222222).
Square it (0.5216049380) and add it to both sides.

Add '0.5216049380' to each side of the equation.
-1.444444444x + 0.5216049380 + x2 = -0.2962962963 + 0.5216049380

Reorder the terms:
0.5216049380 + -1.444444444x + x2 = -0.2962962963 + 0.5216049380

Combine like terms: -0.2962962963 + 0.5216049380 = 0.2253086417
0.5216049380 + -1.444444444x + x2 = 0.2253086417

Factor a perfect square on the left side:
(x + -0.722222222)(x + -0.722222222) = 0.2253086417

Calculate the square root of the right side: 0.474666874

Break this problem into two subproblems by setting 
(x + -0.722222222) equal to 0.474666874 and -0.474666874.

Subproblem 1

x + -0.722222222 = 0.474666874 Simplifying x + -0.722222222 = 0.474666874 Reorder the terms: -0.722222222 + x = 0.474666874 Solving -0.722222222 + x = 0.474666874 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.722222222' to each side of the equation. -0.722222222 + 0.722222222 + x = 0.474666874 + 0.722222222 Combine like terms: -0.722222222 + 0.722222222 = 0.000000000 0.000000000 + x = 0.474666874 + 0.722222222 x = 0.474666874 + 0.722222222 Combine like terms: 0.474666874 + 0.722222222 = 1.196889096 x = 1.196889096 Simplifying x = 1.196889096

Subproblem 2

x + -0.722222222 = -0.474666874 Simplifying x + -0.722222222 = -0.474666874 Reorder the terms: -0.722222222 + x = -0.474666874 Solving -0.722222222 + x = -0.474666874 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.722222222' to each side of the equation. -0.722222222 + 0.722222222 + x = -0.474666874 + 0.722222222 Combine like terms: -0.722222222 + 0.722222222 = 0.000000000 0.000000000 + x = -0.474666874 + 0.722222222 x = -0.474666874 + 0.722222222 Combine like terms: -0.474666874 + 0.722222222 = 0.247555348 x = 0.247555348 Simplifying x = 0.247555348

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.196889096, 0.247555348}

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