6x^2-27x+28=0

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Solution for 6x^2-27x+28=0 equation:


Simplifying
6x2 + -27x + 28 = 0

Reorder the terms:
28 + -27x + 6x2 = 0

Solving
28 + -27x + 6x2 = 0

Solving for variable 'x'.

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

Divide each side by '6'.
4.666666667 + -4.5x + x2 = 0

Move the constant term to the right:

Add '-4.666666667' to each side of the equation.
4.666666667 + -4.5x + -4.666666667 + x2 = 0 + -4.666666667

Reorder the terms:
4.666666667 + -4.666666667 + -4.5x + x2 = 0 + -4.666666667

Combine like terms: 4.666666667 + -4.666666667 = 0.000000000
0.000000000 + -4.5x + x2 = 0 + -4.666666667
-4.5x + x2 = 0 + -4.666666667

Combine like terms: 0 + -4.666666667 = -4.666666667
-4.5x + x2 = -4.666666667

The x term is -4.5x.  Take half its coefficient (-2.25).
Square it (5.0625) and add it to both sides.

Add '5.0625' to each side of the equation.
-4.5x + 5.0625 + x2 = -4.666666667 + 5.0625

Reorder the terms:
5.0625 + -4.5x + x2 = -4.666666667 + 5.0625

Combine like terms: -4.666666667 + 5.0625 = 0.395833333
5.0625 + -4.5x + x2 = 0.395833333

Factor a perfect square on the left side:
(x + -2.25)(x + -2.25) = 0.395833333

Calculate the square root of the right side: 0.629152869

Break this problem into two subproblems by setting 
(x + -2.25) equal to 0.629152869 and -0.629152869.

Subproblem 1

x + -2.25 = 0.629152869 Simplifying x + -2.25 = 0.629152869 Reorder the terms: -2.25 + x = 0.629152869 Solving -2.25 + x = 0.629152869 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + x = 0.629152869 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + x = 0.629152869 + 2.25 x = 0.629152869 + 2.25 Combine like terms: 0.629152869 + 2.25 = 2.879152869 x = 2.879152869 Simplifying x = 2.879152869

Subproblem 2

x + -2.25 = -0.629152869 Simplifying x + -2.25 = -0.629152869 Reorder the terms: -2.25 + x = -0.629152869 Solving -2.25 + x = -0.629152869 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + x = -0.629152869 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + x = -0.629152869 + 2.25 x = -0.629152869 + 2.25 Combine like terms: -0.629152869 + 2.25 = 1.620847131 x = 1.620847131 Simplifying x = 1.620847131

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.879152869, 1.620847131}

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