16x^2+32x-161=0

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Solution for 16x^2+32x-161=0 equation:


Simplifying
16x2 + 32x + -161 = 0

Reorder the terms:
-161 + 32x + 16x2 = 0

Solving
-161 + 32x + 16x2 = 0

Solving for variable 'x'.

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

Divide each side by '16'.
-10.0625 + 2x + x2 = 0

Move the constant term to the right:

Add '10.0625' to each side of the equation.
-10.0625 + 2x + 10.0625 + x2 = 0 + 10.0625

Reorder the terms:
-10.0625 + 10.0625 + 2x + x2 = 0 + 10.0625

Combine like terms: -10.0625 + 10.0625 = 0.0000
0.0000 + 2x + x2 = 0 + 10.0625
2x + x2 = 0 + 10.0625

Combine like terms: 0 + 10.0625 = 10.0625
2x + x2 = 10.0625

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2x + 1 + x2 = 10.0625 + 1

Reorder the terms:
1 + 2x + x2 = 10.0625 + 1

Combine like terms: 10.0625 + 1 = 11.0625
1 + 2x + x2 = 11.0625

Factor a perfect square on the left side:
(x + 1)(x + 1) = 11.0625

Calculate the square root of the right side: 3.326033674

Break this problem into two subproblems by setting 
(x + 1) equal to 3.326033674 and -3.326033674.

Subproblem 1

x + 1 = 3.326033674 Simplifying x + 1 = 3.326033674 Reorder the terms: 1 + x = 3.326033674 Solving 1 + x = 3.326033674 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 3.326033674 + -1 Combine like terms: 1 + -1 = 0 0 + x = 3.326033674 + -1 x = 3.326033674 + -1 Combine like terms: 3.326033674 + -1 = 2.326033674 x = 2.326033674 Simplifying x = 2.326033674

Subproblem 2

x + 1 = -3.326033674 Simplifying x + 1 = -3.326033674 Reorder the terms: 1 + x = -3.326033674 Solving 1 + x = -3.326033674 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -3.326033674 + -1 Combine like terms: 1 + -1 = 0 0 + x = -3.326033674 + -1 x = -3.326033674 + -1 Combine like terms: -3.326033674 + -1 = -4.326033674 x = -4.326033674 Simplifying x = -4.326033674

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.326033674, -4.326033674}

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