3x^2+32x-64=0

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Solution for 3x^2+32x-64=0 equation:


Simplifying
3x2 + 32x + -64 = 0

Reorder the terms:
-64 + 32x + 3x2 = 0

Solving
-64 + 32x + 3x2 = 0

Solving for variable 'x'.

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

Divide each side by '3'.
-21.33333333 + 10.66666667x + x2 = 0

Move the constant term to the right:

Add '21.33333333' to each side of the equation.
-21.33333333 + 10.66666667x + 21.33333333 + x2 = 0 + 21.33333333

Reorder the terms:
-21.33333333 + 21.33333333 + 10.66666667x + x2 = 0 + 21.33333333

Combine like terms: -21.33333333 + 21.33333333 = 0.00000000
0.00000000 + 10.66666667x + x2 = 0 + 21.33333333
10.66666667x + x2 = 0 + 21.33333333

Combine like terms: 0 + 21.33333333 = 21.33333333
10.66666667x + x2 = 21.33333333

The x term is 10.66666667x.  Take half its coefficient (5.333333335).
Square it (28.44444446) and add it to both sides.

Add '28.44444446' to each side of the equation.
10.66666667x + 28.44444446 + x2 = 21.33333333 + 28.44444446

Reorder the terms:
28.44444446 + 10.66666667x + x2 = 21.33333333 + 28.44444446

Combine like terms: 21.33333333 + 28.44444446 = 49.77777779
28.44444446 + 10.66666667x + x2 = 49.77777779

Factor a perfect square on the left side:
(x + 5.333333335)(x + 5.333333335) = 49.77777779

Calculate the square root of the right side: 7.05533683

Break this problem into two subproblems by setting 
(x + 5.333333335) equal to 7.05533683 and -7.05533683.

Subproblem 1

x + 5.333333335 = 7.05533683 Simplifying x + 5.333333335 = 7.05533683 Reorder the terms: 5.333333335 + x = 7.05533683 Solving 5.333333335 + x = 7.05533683 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5.333333335' to each side of the equation. 5.333333335 + -5.333333335 + x = 7.05533683 + -5.333333335 Combine like terms: 5.333333335 + -5.333333335 = 0.000000000 0.000000000 + x = 7.05533683 + -5.333333335 x = 7.05533683 + -5.333333335 Combine like terms: 7.05533683 + -5.333333335 = 1.722003495 x = 1.722003495 Simplifying x = 1.722003495

Subproblem 2

x + 5.333333335 = -7.05533683 Simplifying x + 5.333333335 = -7.05533683 Reorder the terms: 5.333333335 + x = -7.05533683 Solving 5.333333335 + x = -7.05533683 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5.333333335' to each side of the equation. 5.333333335 + -5.333333335 + x = -7.05533683 + -5.333333335 Combine like terms: 5.333333335 + -5.333333335 = 0.000000000 0.000000000 + x = -7.05533683 + -5.333333335 x = -7.05533683 + -5.333333335 Combine like terms: -7.05533683 + -5.333333335 = -12.388670165 x = -12.388670165 Simplifying x = -12.388670165

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.722003495, -12.388670165}

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