x^2-19x+49=0

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Solution for x^2-19x+49=0 equation:


Simplifying
x2 + -19x + 49 = 0

Reorder the terms:
49 + -19x + x2 = 0

Solving
49 + -19x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-49' to each side of the equation.
49 + -19x + -49 + x2 = 0 + -49

Reorder the terms:
49 + -49 + -19x + x2 = 0 + -49

Combine like terms: 49 + -49 = 0
0 + -19x + x2 = 0 + -49
-19x + x2 = 0 + -49

Combine like terms: 0 + -49 = -49
-19x + x2 = -49

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 = -49 + 90.25

Reorder the terms:
90.25 + -19x + x2 = -49 + 90.25

Combine like terms: -49 + 90.25 = 41.25
90.25 + -19x + x2 = 41.25

Factor a perfect square on the left side:
(x + -9.5)(x + -9.5) = 41.25

Calculate the square root of the right side: 6.422616289

Break this problem into two subproblems by setting 
(x + -9.5) equal to 6.422616289 and -6.422616289.

Subproblem 1

x + -9.5 = 6.422616289 Simplifying x + -9.5 = 6.422616289 Reorder the terms: -9.5 + x = 6.422616289 Solving -9.5 + x = 6.422616289 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 = 6.422616289 + 9.5 Combine like terms: -9.5 + 9.5 = 0.0 0.0 + x = 6.422616289 + 9.5 x = 6.422616289 + 9.5 Combine like terms: 6.422616289 + 9.5 = 15.922616289 x = 15.922616289 Simplifying x = 15.922616289

Subproblem 2

x + -9.5 = -6.422616289 Simplifying x + -9.5 = -6.422616289 Reorder the terms: -9.5 + x = -6.422616289 Solving -9.5 + x = -6.422616289 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 = -6.422616289 + 9.5 Combine like terms: -9.5 + 9.5 = 0.0 0.0 + x = -6.422616289 + 9.5 x = -6.422616289 + 9.5 Combine like terms: -6.422616289 + 9.5 = 3.077383711 x = 3.077383711 Simplifying x = 3.077383711

Solution

The solution to the problem is based on the solutions from the subproblems. x = {15.922616289, 3.077383711}

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