16x^2+117x-30=0

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Solution for 16x^2+117x-30=0 equation:


Simplifying
16x2 + 117x + -30 = 0

Reorder the terms:
-30 + 117x + 16x2 = 0

Solving
-30 + 117x + 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'.
-1.875 + 7.3125x + x2 = 0

Move the constant term to the right:

Add '1.875' to each side of the equation.
-1.875 + 7.3125x + 1.875 + x2 = 0 + 1.875

Reorder the terms:
-1.875 + 1.875 + 7.3125x + x2 = 0 + 1.875

Combine like terms: -1.875 + 1.875 = 0.000
0.000 + 7.3125x + x2 = 0 + 1.875
7.3125x + x2 = 0 + 1.875

Combine like terms: 0 + 1.875 = 1.875
7.3125x + x2 = 1.875

The x term is 7.3125x.  Take half its coefficient (3.65625).
Square it (13.36816406) and add it to both sides.

Add '13.36816406' to each side of the equation.
7.3125x + 13.36816406 + x2 = 1.875 + 13.36816406

Reorder the terms:
13.36816406 + 7.3125x + x2 = 1.875 + 13.36816406

Combine like terms: 1.875 + 13.36816406 = 15.24316406
13.36816406 + 7.3125x + x2 = 15.24316406

Factor a perfect square on the left side:
(x + 3.65625)(x + 3.65625) = 15.24316406

Calculate the square root of the right side: 3.904249487

Break this problem into two subproblems by setting 
(x + 3.65625) equal to 3.904249487 and -3.904249487.

Subproblem 1

x + 3.65625 = 3.904249487 Simplifying x + 3.65625 = 3.904249487 Reorder the terms: 3.65625 + x = 3.904249487 Solving 3.65625 + x = 3.904249487 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.65625' to each side of the equation. 3.65625 + -3.65625 + x = 3.904249487 + -3.65625 Combine like terms: 3.65625 + -3.65625 = 0.00000 0.00000 + x = 3.904249487 + -3.65625 x = 3.904249487 + -3.65625 Combine like terms: 3.904249487 + -3.65625 = 0.247999487 x = 0.247999487 Simplifying x = 0.247999487

Subproblem 2

x + 3.65625 = -3.904249487 Simplifying x + 3.65625 = -3.904249487 Reorder the terms: 3.65625 + x = -3.904249487 Solving 3.65625 + x = -3.904249487 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.65625' to each side of the equation. 3.65625 + -3.65625 + x = -3.904249487 + -3.65625 Combine like terms: 3.65625 + -3.65625 = 0.00000 0.00000 + x = -3.904249487 + -3.65625 x = -3.904249487 + -3.65625 Combine like terms: -3.904249487 + -3.65625 = -7.560499487 x = -7.560499487 Simplifying x = -7.560499487

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.247999487, -7.560499487}

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