16x^2+32x+13=0

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Solution for 16x^2+32x+13=0 equation:


Simplifying
16x2 + 32x + 13 = 0

Reorder the terms:
13 + 32x + 16x2 = 0

Solving
13 + 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'.
0.8125 + 2x + x2 = 0

Move the constant term to the right:

Add '-0.8125' to each side of the equation.
0.8125 + 2x + -0.8125 + x2 = 0 + -0.8125

Reorder the terms:
0.8125 + -0.8125 + 2x + x2 = 0 + -0.8125

Combine like terms: 0.8125 + -0.8125 = 0.0000
0.0000 + 2x + x2 = 0 + -0.8125
2x + x2 = 0 + -0.8125

Combine like terms: 0 + -0.8125 = -0.8125
2x + x2 = -0.8125

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 = -0.8125 + 1

Reorder the terms:
1 + 2x + x2 = -0.8125 + 1

Combine like terms: -0.8125 + 1 = 0.1875
1 + 2x + x2 = 0.1875

Factor a perfect square on the left side:
(x + 1)(x + 1) = 0.1875

Calculate the square root of the right side: 0.433012702

Break this problem into two subproblems by setting 
(x + 1) equal to 0.433012702 and -0.433012702.

Subproblem 1

x + 1 = 0.433012702 Simplifying x + 1 = 0.433012702 Reorder the terms: 1 + x = 0.433012702 Solving 1 + x = 0.433012702 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 = 0.433012702 + -1 Combine like terms: 1 + -1 = 0 0 + x = 0.433012702 + -1 x = 0.433012702 + -1 Combine like terms: 0.433012702 + -1 = -0.566987298 x = -0.566987298 Simplifying x = -0.566987298

Subproblem 2

x + 1 = -0.433012702 Simplifying x + 1 = -0.433012702 Reorder the terms: 1 + x = -0.433012702 Solving 1 + x = -0.433012702 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 = -0.433012702 + -1 Combine like terms: 1 + -1 = 0 0 + x = -0.433012702 + -1 x = -0.433012702 + -1 Combine like terms: -0.433012702 + -1 = -1.433012702 x = -1.433012702 Simplifying x = -1.433012702

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.566987298, -1.433012702}

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