16x^2+30x+5=0

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Solution for 16x^2+30x+5=0 equation:


Simplifying
16x2 + 30x + 5 = 0

Reorder the terms:
5 + 30x + 16x2 = 0

Solving
5 + 30x + 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'.
0.3125 + 1.875x + x2 = 0

Move the constant term to the right:

Add '-0.3125' to each side of the equation.
0.3125 + 1.875x + -0.3125 + x2 = 0 + -0.3125

Reorder the terms:
0.3125 + -0.3125 + 1.875x + x2 = 0 + -0.3125

Combine like terms: 0.3125 + -0.3125 = 0.0000
0.0000 + 1.875x + x2 = 0 + -0.3125
1.875x + x2 = 0 + -0.3125

Combine like terms: 0 + -0.3125 = -0.3125
1.875x + x2 = -0.3125

The x term is 1.875x.  Take half its coefficient (0.9375).
Square it (0.87890625) and add it to both sides.

Add '0.87890625' to each side of the equation.
1.875x + 0.87890625 + x2 = -0.3125 + 0.87890625

Reorder the terms:
0.87890625 + 1.875x + x2 = -0.3125 + 0.87890625

Combine like terms: -0.3125 + 0.87890625 = 0.56640625
0.87890625 + 1.875x + x2 = 0.56640625

Factor a perfect square on the left side:
(x + 0.9375)(x + 0.9375) = 0.56640625

Calculate the square root of the right side: 0.752599661

Break this problem into two subproblems by setting 
(x + 0.9375) equal to 0.752599661 and -0.752599661.

Subproblem 1

x + 0.9375 = 0.752599661 Simplifying x + 0.9375 = 0.752599661 Reorder the terms: 0.9375 + x = 0.752599661 Solving 0.9375 + x = 0.752599661 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.9375' to each side of the equation. 0.9375 + -0.9375 + x = 0.752599661 + -0.9375 Combine like terms: 0.9375 + -0.9375 = 0.0000 0.0000 + x = 0.752599661 + -0.9375 x = 0.752599661 + -0.9375 Combine like terms: 0.752599661 + -0.9375 = -0.184900339 x = -0.184900339 Simplifying x = -0.184900339

Subproblem 2

x + 0.9375 = -0.752599661 Simplifying x + 0.9375 = -0.752599661 Reorder the terms: 0.9375 + x = -0.752599661 Solving 0.9375 + x = -0.752599661 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.9375' to each side of the equation. 0.9375 + -0.9375 + x = -0.752599661 + -0.9375 Combine like terms: 0.9375 + -0.9375 = 0.0000 0.0000 + x = -0.752599661 + -0.9375 x = -0.752599661 + -0.9375 Combine like terms: -0.752599661 + -0.9375 = -1.690099661 x = -1.690099661 Simplifying x = -1.690099661

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.184900339, -1.690099661}

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