0=x^2-18x+34

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Solution for 0=x^2-18x+34 equation:


Simplifying
0 = x2 + -18x + 34

Reorder the terms:
0 = 34 + -18x + x2

Solving
0 = 34 + -18x + x2

Solving for variable 'x'.

Combine like terms: 0 + -34 = -34
-34 + 18x + -1x2 = 34 + -18x + x2 + -34 + 18x + -1x2

Reorder the terms:
-34 + 18x + -1x2 = 34 + -34 + -18x + 18x + x2 + -1x2

Combine like terms: 34 + -34 = 0
-34 + 18x + -1x2 = 0 + -18x + 18x + x2 + -1x2
-34 + 18x + -1x2 = -18x + 18x + x2 + -1x2

Combine like terms: -18x + 18x = 0
-34 + 18x + -1x2 = 0 + x2 + -1x2
-34 + 18x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-34 + 18x + -1x2 = 0

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

Divide each side by '-1'.
34 + -18x + x2 = 0

Move the constant term to the right:

Add '-34' to each side of the equation.
34 + -18x + -34 + x2 = 0 + -34

Reorder the terms:
34 + -34 + -18x + x2 = 0 + -34

Combine like terms: 34 + -34 = 0
0 + -18x + x2 = 0 + -34
-18x + x2 = 0 + -34

Combine like terms: 0 + -34 = -34
-18x + x2 = -34

The x term is -18x.  Take half its coefficient (-9).
Square it (81) and add it to both sides.

Add '81' to each side of the equation.
-18x + 81 + x2 = -34 + 81

Reorder the terms:
81 + -18x + x2 = -34 + 81

Combine like terms: -34 + 81 = 47
81 + -18x + x2 = 47

Factor a perfect square on the left side:
(x + -9)(x + -9) = 47

Calculate the square root of the right side: 6.8556546

Break this problem into two subproblems by setting 
(x + -9) equal to 6.8556546 and -6.8556546.

Subproblem 1

x + -9 = 6.8556546 Simplifying x + -9 = 6.8556546 Reorder the terms: -9 + x = 6.8556546 Solving -9 + x = 6.8556546 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + x = 6.8556546 + 9 Combine like terms: -9 + 9 = 0 0 + x = 6.8556546 + 9 x = 6.8556546 + 9 Combine like terms: 6.8556546 + 9 = 15.8556546 x = 15.8556546 Simplifying x = 15.8556546

Subproblem 2

x + -9 = -6.8556546 Simplifying x + -9 = -6.8556546 Reorder the terms: -9 + x = -6.8556546 Solving -9 + x = -6.8556546 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + x = -6.8556546 + 9 Combine like terms: -9 + 9 = 0 0 + x = -6.8556546 + 9 x = -6.8556546 + 9 Combine like terms: -6.8556546 + 9 = 2.1443454 x = 2.1443454 Simplifying x = 2.1443454

Solution

The solution to the problem is based on the solutions from the subproblems. x = {15.8556546, 2.1443454}

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