x^2-38x+343=0

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Solution for x^2-38x+343=0 equation:


Simplifying
x2 + -38x + 343 = 0

Reorder the terms:
343 + -38x + x2 = 0

Solving
343 + -38x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-343' to each side of the equation.
343 + -38x + -343 + x2 = 0 + -343

Reorder the terms:
343 + -343 + -38x + x2 = 0 + -343

Combine like terms: 343 + -343 = 0
0 + -38x + x2 = 0 + -343
-38x + x2 = 0 + -343

Combine like terms: 0 + -343 = -343
-38x + x2 = -343

The x term is -38x.  Take half its coefficient (-19).
Square it (361) and add it to both sides.

Add '361' to each side of the equation.
-38x + 361 + x2 = -343 + 361

Reorder the terms:
361 + -38x + x2 = -343 + 361

Combine like terms: -343 + 361 = 18
361 + -38x + x2 = 18

Factor a perfect square on the left side:
(x + -19)(x + -19) = 18

Calculate the square root of the right side: 4.242640687

Break this problem into two subproblems by setting 
(x + -19) equal to 4.242640687 and -4.242640687.

Subproblem 1

x + -19 = 4.242640687 Simplifying x + -19 = 4.242640687 Reorder the terms: -19 + x = 4.242640687 Solving -19 + x = 4.242640687 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '19' to each side of the equation. -19 + 19 + x = 4.242640687 + 19 Combine like terms: -19 + 19 = 0 0 + x = 4.242640687 + 19 x = 4.242640687 + 19 Combine like terms: 4.242640687 + 19 = 23.242640687 x = 23.242640687 Simplifying x = 23.242640687

Subproblem 2

x + -19 = -4.242640687 Simplifying x + -19 = -4.242640687 Reorder the terms: -19 + x = -4.242640687 Solving -19 + x = -4.242640687 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '19' to each side of the equation. -19 + 19 + x = -4.242640687 + 19 Combine like terms: -19 + 19 = 0 0 + x = -4.242640687 + 19 x = -4.242640687 + 19 Combine like terms: -4.242640687 + 19 = 14.757359313 x = 14.757359313 Simplifying x = 14.757359313

Solution

The solution to the problem is based on the solutions from the subproblems. x = {23.242640687, 14.757359313}

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