X^2-16X-936=0

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Solution for X^2-16X-936=0 equation:


Simplifying
X2 + -16X + -936 = 0

Reorder the terms:
-936 + -16X + X2 = 0

Solving
-936 + -16X + X2 = 0

Solving for variable 'X'.

Begin completing the square.

Move the constant term to the right:

Add '936' to each side of the equation.
-936 + -16X + 936 + X2 = 0 + 936

Reorder the terms:
-936 + 936 + -16X + X2 = 0 + 936

Combine like terms: -936 + 936 = 0
0 + -16X + X2 = 0 + 936
-16X + X2 = 0 + 936

Combine like terms: 0 + 936 = 936
-16X + X2 = 936

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 = 936 + 64

Reorder the terms:
64 + -16X + X2 = 936 + 64

Combine like terms: 936 + 64 = 1000
64 + -16X + X2 = 1000

Factor a perfect square on the left side:
(X + -8)(X + -8) = 1000

Calculate the square root of the right side: 31.622776602

Break this problem into two subproblems by setting 
(X + -8) equal to 31.622776602 and -31.622776602.

Subproblem 1

X + -8 = 31.622776602 Simplifying X + -8 = 31.622776602 Reorder the terms: -8 + X = 31.622776602 Solving -8 + X = 31.622776602 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 = 31.622776602 + 8 Combine like terms: -8 + 8 = 0 0 + X = 31.622776602 + 8 X = 31.622776602 + 8 Combine like terms: 31.622776602 + 8 = 39.622776602 X = 39.622776602 Simplifying X = 39.622776602

Subproblem 2

X + -8 = -31.622776602 Simplifying X + -8 = -31.622776602 Reorder the terms: -8 + X = -31.622776602 Solving -8 + X = -31.622776602 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 = -31.622776602 + 8 Combine like terms: -8 + 8 = 0 0 + X = -31.622776602 + 8 X = -31.622776602 + 8 Combine like terms: -31.622776602 + 8 = -23.622776602 X = -23.622776602 Simplifying X = -23.622776602

Solution

The solution to the problem is based on the solutions from the subproblems. X = {39.622776602, -23.622776602}

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