0=x^2-14x+27

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Solution for 0=x^2-14x+27 equation:


Simplifying
0 = x2 + -14x + 27

Reorder the terms:
0 = 27 + -14x + x2

Solving
0 = 27 + -14x + x2

Solving for variable 'x'.

Combine like terms: 0 + -27 = -27
-27 + 14x + -1x2 = 27 + -14x + x2 + -27 + 14x + -1x2

Reorder the terms:
-27 + 14x + -1x2 = 27 + -27 + -14x + 14x + x2 + -1x2

Combine like terms: 27 + -27 = 0
-27 + 14x + -1x2 = 0 + -14x + 14x + x2 + -1x2
-27 + 14x + -1x2 = -14x + 14x + x2 + -1x2

Combine like terms: -14x + 14x = 0
-27 + 14x + -1x2 = 0 + x2 + -1x2
-27 + 14x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-27 + 14x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
27 + -14x + x2 = 0

Move the constant term to the right:

Add '-27' to each side of the equation.
27 + -14x + -27 + x2 = 0 + -27

Reorder the terms:
27 + -27 + -14x + x2 = 0 + -27

Combine like terms: 27 + -27 = 0
0 + -14x + x2 = 0 + -27
-14x + x2 = 0 + -27

Combine like terms: 0 + -27 = -27
-14x + x2 = -27

The x term is -14x.  Take half its coefficient (-7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
-14x + 49 + x2 = -27 + 49

Reorder the terms:
49 + -14x + x2 = -27 + 49

Combine like terms: -27 + 49 = 22
49 + -14x + x2 = 22

Factor a perfect square on the left side:
(x + -7)(x + -7) = 22

Calculate the square root of the right side: 4.69041576

Break this problem into two subproblems by setting 
(x + -7) equal to 4.69041576 and -4.69041576.

Subproblem 1

x + -7 = 4.69041576 Simplifying x + -7 = 4.69041576 Reorder the terms: -7 + x = 4.69041576 Solving -7 + x = 4.69041576 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = 4.69041576 + 7 Combine like terms: -7 + 7 = 0 0 + x = 4.69041576 + 7 x = 4.69041576 + 7 Combine like terms: 4.69041576 + 7 = 11.69041576 x = 11.69041576 Simplifying x = 11.69041576

Subproblem 2

x + -7 = -4.69041576 Simplifying x + -7 = -4.69041576 Reorder the terms: -7 + x = -4.69041576 Solving -7 + x = -4.69041576 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = -4.69041576 + 7 Combine like terms: -7 + 7 = 0 0 + x = -4.69041576 + 7 x = -4.69041576 + 7 Combine like terms: -4.69041576 + 7 = 2.30958424 x = 2.30958424 Simplifying x = 2.30958424

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.69041576, 2.30958424}

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