x^2-68x-204=0

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Solution for x^2-68x-204=0 equation:


Simplifying
x2 + -68x + -204 = 0

Reorder the terms:
-204 + -68x + x2 = 0

Solving
-204 + -68x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '204' to each side of the equation.
-204 + -68x + 204 + x2 = 0 + 204

Reorder the terms:
-204 + 204 + -68x + x2 = 0 + 204

Combine like terms: -204 + 204 = 0
0 + -68x + x2 = 0 + 204
-68x + x2 = 0 + 204

Combine like terms: 0 + 204 = 204
-68x + x2 = 204

The x term is -68x.  Take half its coefficient (-34).
Square it (1156) and add it to both sides.

Add '1156' to each side of the equation.
-68x + 1156 + x2 = 204 + 1156

Reorder the terms:
1156 + -68x + x2 = 204 + 1156

Combine like terms: 204 + 1156 = 1360
1156 + -68x + x2 = 1360

Factor a perfect square on the left side:
(x + -34)(x + -34) = 1360

Calculate the square root of the right side: 36.878177829

Break this problem into two subproblems by setting 
(x + -34) equal to 36.878177829 and -36.878177829.

Subproblem 1

x + -34 = 36.878177829 Simplifying x + -34 = 36.878177829 Reorder the terms: -34 + x = 36.878177829 Solving -34 + x = 36.878177829 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '34' to each side of the equation. -34 + 34 + x = 36.878177829 + 34 Combine like terms: -34 + 34 = 0 0 + x = 36.878177829 + 34 x = 36.878177829 + 34 Combine like terms: 36.878177829 + 34 = 70.878177829 x = 70.878177829 Simplifying x = 70.878177829

Subproblem 2

x + -34 = -36.878177829 Simplifying x + -34 = -36.878177829 Reorder the terms: -34 + x = -36.878177829 Solving -34 + x = -36.878177829 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '34' to each side of the equation. -34 + 34 + x = -36.878177829 + 34 Combine like terms: -34 + 34 = 0 0 + x = -36.878177829 + 34 x = -36.878177829 + 34 Combine like terms: -36.878177829 + 34 = -2.878177829 x = -2.878177829 Simplifying x = -2.878177829

Solution

The solution to the problem is based on the solutions from the subproblems. x = {70.878177829, -2.878177829}

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