16x^2+96x+15=0

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Solution for 16x^2+96x+15=0 equation:


Simplifying
16x2 + 96x + 15 = 0

Reorder the terms:
15 + 96x + 16x2 = 0

Solving
15 + 96x + 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'.
0.9375 + 6x + x2 = 0

Move the constant term to the right:

Add '-0.9375' to each side of the equation.
0.9375 + 6x + -0.9375 + x2 = 0 + -0.9375

Reorder the terms:
0.9375 + -0.9375 + 6x + x2 = 0 + -0.9375

Combine like terms: 0.9375 + -0.9375 = 0.0000
0.0000 + 6x + x2 = 0 + -0.9375
6x + x2 = 0 + -0.9375

Combine like terms: 0 + -0.9375 = -0.9375
6x + x2 = -0.9375

The x term is 6x.  Take half its coefficient (3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
6x + 9 + x2 = -0.9375 + 9

Reorder the terms:
9 + 6x + x2 = -0.9375 + 9

Combine like terms: -0.9375 + 9 = 8.0625
9 + 6x + x2 = 8.0625

Factor a perfect square on the left side:
(x + 3)(x + 3) = 8.0625

Calculate the square root of the right side: 2.839454173

Break this problem into two subproblems by setting 
(x + 3) equal to 2.839454173 and -2.839454173.

Subproblem 1

x + 3 = 2.839454173 Simplifying x + 3 = 2.839454173 Reorder the terms: 3 + x = 2.839454173 Solving 3 + x = 2.839454173 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = 2.839454173 + -3 Combine like terms: 3 + -3 = 0 0 + x = 2.839454173 + -3 x = 2.839454173 + -3 Combine like terms: 2.839454173 + -3 = -0.160545827 x = -0.160545827 Simplifying x = -0.160545827

Subproblem 2

x + 3 = -2.839454173 Simplifying x + 3 = -2.839454173 Reorder the terms: 3 + x = -2.839454173 Solving 3 + x = -2.839454173 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = -2.839454173 + -3 Combine like terms: 3 + -3 = 0 0 + x = -2.839454173 + -3 x = -2.839454173 + -3 Combine like terms: -2.839454173 + -3 = -5.839454173 x = -5.839454173 Simplifying x = -5.839454173

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.160545827, -5.839454173}

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