9x^2+64x+48=0

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Solution for 9x^2+64x+48=0 equation:


Simplifying
9x2 + 64x + 48 = 0

Reorder the terms:
48 + 64x + 9x2 = 0

Solving
48 + 64x + 9x2 = 0

Solving for variable 'x'.

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

Divide each side by '9'.
5.333333333 + 7.111111111x + x2 = 0

Move the constant term to the right:

Add '-5.333333333' to each side of the equation.
5.333333333 + 7.111111111x + -5.333333333 + x2 = 0 + -5.333333333

Reorder the terms:
5.333333333 + -5.333333333 + 7.111111111x + x2 = 0 + -5.333333333

Combine like terms: 5.333333333 + -5.333333333 = 0.000000000
0.000000000 + 7.111111111x + x2 = 0 + -5.333333333
7.111111111x + x2 = 0 + -5.333333333

Combine like terms: 0 + -5.333333333 = -5.333333333
7.111111111x + x2 = -5.333333333

The x term is 7.111111111x.  Take half its coefficient (3.555555556).
Square it (12.64197531) and add it to both sides.

Add '12.64197531' to each side of the equation.
7.111111111x + 12.64197531 + x2 = -5.333333333 + 12.64197531

Reorder the terms:
12.64197531 + 7.111111111x + x2 = -5.333333333 + 12.64197531

Combine like terms: -5.333333333 + 12.64197531 = 7.308641977
12.64197531 + 7.111111111x + x2 = 7.308641977

Factor a perfect square on the left side:
(x + 3.555555556)(x + 3.555555556) = 7.308641977

Calculate the square root of the right side: 2.703450014

Break this problem into two subproblems by setting 
(x + 3.555555556) equal to 2.703450014 and -2.703450014.

Subproblem 1

x + 3.555555556 = 2.703450014 Simplifying x + 3.555555556 = 2.703450014 Reorder the terms: 3.555555556 + x = 2.703450014 Solving 3.555555556 + x = 2.703450014 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.555555556' to each side of the equation. 3.555555556 + -3.555555556 + x = 2.703450014 + -3.555555556 Combine like terms: 3.555555556 + -3.555555556 = 0.000000000 0.000000000 + x = 2.703450014 + -3.555555556 x = 2.703450014 + -3.555555556 Combine like terms: 2.703450014 + -3.555555556 = -0.852105542 x = -0.852105542 Simplifying x = -0.852105542

Subproblem 2

x + 3.555555556 = -2.703450014 Simplifying x + 3.555555556 = -2.703450014 Reorder the terms: 3.555555556 + x = -2.703450014 Solving 3.555555556 + x = -2.703450014 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.555555556' to each side of the equation. 3.555555556 + -3.555555556 + x = -2.703450014 + -3.555555556 Combine like terms: 3.555555556 + -3.555555556 = 0.000000000 0.000000000 + x = -2.703450014 + -3.555555556 x = -2.703450014 + -3.555555556 Combine like terms: -2.703450014 + -3.555555556 = -6.25900557 x = -6.25900557 Simplifying x = -6.25900557

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.852105542, -6.25900557}

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