x^2+16x-2=0

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


Simplifying
x2 + 16x + -2 = 0

Reorder the terms:
-2 + 16x + x2 = 0

Solving
-2 + 16x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + 16x + 2 + x2 = 0 + 2

Reorder the terms:
-2 + 2 + 16x + x2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + 16x + x2 = 0 + 2
16x + x2 = 0 + 2

Combine like terms: 0 + 2 = 2
16x + x2 = 2

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 = 2 + 64

Reorder the terms:
64 + 16x + x2 = 2 + 64

Combine like terms: 2 + 64 = 66
64 + 16x + x2 = 66

Factor a perfect square on the left side:
(x + 8)(x + 8) = 66

Calculate the square root of the right side: 8.124038405

Break this problem into two subproblems by setting 
(x + 8) equal to 8.124038405 and -8.124038405.

Subproblem 1

x + 8 = 8.124038405 Simplifying x + 8 = 8.124038405 Reorder the terms: 8 + x = 8.124038405 Solving 8 + x = 8.124038405 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 = 8.124038405 + -8 Combine like terms: 8 + -8 = 0 0 + x = 8.124038405 + -8 x = 8.124038405 + -8 Combine like terms: 8.124038405 + -8 = 0.124038405 x = 0.124038405 Simplifying x = 0.124038405

Subproblem 2

x + 8 = -8.124038405 Simplifying x + 8 = -8.124038405 Reorder the terms: 8 + x = -8.124038405 Solving 8 + x = -8.124038405 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 = -8.124038405 + -8 Combine like terms: 8 + -8 = 0 0 + x = -8.124038405 + -8 x = -8.124038405 + -8 Combine like terms: -8.124038405 + -8 = -16.124038405 x = -16.124038405 Simplifying x = -16.124038405

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.124038405, -16.124038405}

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