x^2-8x-192=0

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Solution for x^2-8x-192=0 equation:


Simplifying
x2 + -8x + -192 = 0

Reorder the terms:
-192 + -8x + x2 = 0

Solving
-192 + -8x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '192' to each side of the equation.
-192 + -8x + 192 + x2 = 0 + 192

Reorder the terms:
-192 + 192 + -8x + x2 = 0 + 192

Combine like terms: -192 + 192 = 0
0 + -8x + x2 = 0 + 192
-8x + x2 = 0 + 192

Combine like terms: 0 + 192 = 192
-8x + x2 = 192

The x term is -8x.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8x + 16 + x2 = 192 + 16

Reorder the terms:
16 + -8x + x2 = 192 + 16

Combine like terms: 192 + 16 = 208
16 + -8x + x2 = 208

Factor a perfect square on the left side:
(x + -4)(x + -4) = 208

Calculate the square root of the right side: 14.422205102

Break this problem into two subproblems by setting 
(x + -4) equal to 14.422205102 and -14.422205102.

Subproblem 1

x + -4 = 14.422205102 Simplifying x + -4 = 14.422205102 Reorder the terms: -4 + x = 14.422205102 Solving -4 + x = 14.422205102 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = 14.422205102 + 4 Combine like terms: -4 + 4 = 0 0 + x = 14.422205102 + 4 x = 14.422205102 + 4 Combine like terms: 14.422205102 + 4 = 18.422205102 x = 18.422205102 Simplifying x = 18.422205102

Subproblem 2

x + -4 = -14.422205102 Simplifying x + -4 = -14.422205102 Reorder the terms: -4 + x = -14.422205102 Solving -4 + x = -14.422205102 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = -14.422205102 + 4 Combine like terms: -4 + 4 = 0 0 + x = -14.422205102 + 4 x = -14.422205102 + 4 Combine like terms: -14.422205102 + 4 = -10.422205102 x = -10.422205102 Simplifying x = -10.422205102

Solution

The solution to the problem is based on the solutions from the subproblems. x = {18.422205102, -10.422205102}

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