0=x^2-16x-188

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Solution for 0=x^2-16x-188 equation:


Simplifying
0 = x2 + -16x + -188

Reorder the terms:
0 = -188 + -16x + x2

Solving
0 = -188 + -16x + x2

Solving for variable 'x'.

Combine like terms: 0 + 188 = 188
188 + 16x + -1x2 = -188 + -16x + x2 + 188 + 16x + -1x2

Reorder the terms:
188 + 16x + -1x2 = -188 + 188 + -16x + 16x + x2 + -1x2

Combine like terms: -188 + 188 = 0
188 + 16x + -1x2 = 0 + -16x + 16x + x2 + -1x2
188 + 16x + -1x2 = -16x + 16x + x2 + -1x2

Combine like terms: -16x + 16x = 0
188 + 16x + -1x2 = 0 + x2 + -1x2
188 + 16x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
188 + 16x + -1x2 = 0

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

Divide each side by '-1'.
-188 + -16x + x2 = 0

Move the constant term to the right:

Add '188' to each side of the equation.
-188 + -16x + 188 + x2 = 0 + 188

Reorder the terms:
-188 + 188 + -16x + x2 = 0 + 188

Combine like terms: -188 + 188 = 0
0 + -16x + x2 = 0 + 188
-16x + x2 = 0 + 188

Combine like terms: 0 + 188 = 188
-16x + x2 = 188

The x term is -16x.  Take half its coefficient (-8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
-16x + 64 + x2 = 188 + 64

Reorder the terms:
64 + -16x + x2 = 188 + 64

Combine like terms: 188 + 64 = 252
64 + -16x + x2 = 252

Factor a perfect square on the left side:
(x + -8)(x + -8) = 252

Calculate the square root of the right side: 15.874507866

Break this problem into two subproblems by setting 
(x + -8) equal to 15.874507866 and -15.874507866.

Subproblem 1

x + -8 = 15.874507866 Simplifying x + -8 = 15.874507866 Reorder the terms: -8 + x = 15.874507866 Solving -8 + x = 15.874507866 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + x = 15.874507866 + 8 Combine like terms: -8 + 8 = 0 0 + x = 15.874507866 + 8 x = 15.874507866 + 8 Combine like terms: 15.874507866 + 8 = 23.874507866 x = 23.874507866 Simplifying x = 23.874507866

Subproblem 2

x + -8 = -15.874507866 Simplifying x + -8 = -15.874507866 Reorder the terms: -8 + x = -15.874507866 Solving -8 + x = -15.874507866 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + x = -15.874507866 + 8 Combine like terms: -8 + 8 = 0 0 + x = -15.874507866 + 8 x = -15.874507866 + 8 Combine like terms: -15.874507866 + 8 = -7.874507866 x = -7.874507866 Simplifying x = -7.874507866

Solution

The solution to the problem is based on the solutions from the subproblems. x = {23.874507866, -7.874507866}

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