0=x^2-19x+14

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Solution for 0=x^2-19x+14 equation:


Simplifying
0 = x2 + -19x + 14

Reorder the terms:
0 = 14 + -19x + x2

Solving
0 = 14 + -19x + x2

Solving for variable 'x'.

Combine like terms: 0 + -14 = -14
-14 + 19x + -1x2 = 14 + -19x + x2 + -14 + 19x + -1x2

Reorder the terms:
-14 + 19x + -1x2 = 14 + -14 + -19x + 19x + x2 + -1x2

Combine like terms: 14 + -14 = 0
-14 + 19x + -1x2 = 0 + -19x + 19x + x2 + -1x2
-14 + 19x + -1x2 = -19x + 19x + x2 + -1x2

Combine like terms: -19x + 19x = 0
-14 + 19x + -1x2 = 0 + x2 + -1x2
-14 + 19x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-14 + 19x + -1x2 = 0

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

Divide each side by '-1'.
14 + -19x + x2 = 0

Move the constant term to the right:

Add '-14' to each side of the equation.
14 + -19x + -14 + x2 = 0 + -14

Reorder the terms:
14 + -14 + -19x + x2 = 0 + -14

Combine like terms: 14 + -14 = 0
0 + -19x + x2 = 0 + -14
-19x + x2 = 0 + -14

Combine like terms: 0 + -14 = -14
-19x + x2 = -14

The x term is -19x.  Take half its coefficient (-9.5).
Square it (90.25) and add it to both sides.

Add '90.25' to each side of the equation.
-19x + 90.25 + x2 = -14 + 90.25

Reorder the terms:
90.25 + -19x + x2 = -14 + 90.25

Combine like terms: -14 + 90.25 = 76.25
90.25 + -19x + x2 = 76.25

Factor a perfect square on the left side:
(x + -9.5)(x + -9.5) = 76.25

Calculate the square root of the right side: 8.732124598

Break this problem into two subproblems by setting 
(x + -9.5) equal to 8.732124598 and -8.732124598.

Subproblem 1

x + -9.5 = 8.732124598 Simplifying x + -9.5 = 8.732124598 Reorder the terms: -9.5 + x = 8.732124598 Solving -9.5 + x = 8.732124598 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9.5' to each side of the equation. -9.5 + 9.5 + x = 8.732124598 + 9.5 Combine like terms: -9.5 + 9.5 = 0.0 0.0 + x = 8.732124598 + 9.5 x = 8.732124598 + 9.5 Combine like terms: 8.732124598 + 9.5 = 18.232124598 x = 18.232124598 Simplifying x = 18.232124598

Subproblem 2

x + -9.5 = -8.732124598 Simplifying x + -9.5 = -8.732124598 Reorder the terms: -9.5 + x = -8.732124598 Solving -9.5 + x = -8.732124598 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9.5' to each side of the equation. -9.5 + 9.5 + x = -8.732124598 + 9.5 Combine like terms: -9.5 + 9.5 = 0.0 0.0 + x = -8.732124598 + 9.5 x = -8.732124598 + 9.5 Combine like terms: -8.732124598 + 9.5 = 0.767875402 x = 0.767875402 Simplifying x = 0.767875402

Solution

The solution to the problem is based on the solutions from the subproblems. x = {18.232124598, 0.767875402}

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