3x^2-48x-64=0

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Solution for 3x^2-48x-64=0 equation:


Simplifying
3x2 + -48x + -64 = 0

Reorder the terms:
-64 + -48x + 3x2 = 0

Solving
-64 + -48x + 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 + -16x + x2 = 0

Move the constant term to the right:

Add '21.33333333' to each side of the equation.
-21.33333333 + -16x + 21.33333333 + x2 = 0 + 21.33333333

Reorder the terms:
-21.33333333 + 21.33333333 + -16x + x2 = 0 + 21.33333333

Combine like terms: -21.33333333 + 21.33333333 = 0.00000000
0.00000000 + -16x + x2 = 0 + 21.33333333
-16x + x2 = 0 + 21.33333333

Combine like terms: 0 + 21.33333333 = 21.33333333
-16x + x2 = 21.33333333

The x term is -16x.  Take half its coefficient (-8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
-16x + 64 + x2 = 21.33333333 + 64

Reorder the terms:
64 + -16x + x2 = 21.33333333 + 64

Combine like terms: 21.33333333 + 64 = 85.33333333
64 + -16x + x2 = 85.33333333

Factor a perfect square on the left side:
(x + -8)(x + -8) = 85.33333333

Calculate the square root of the right side: 9.237604307

Break this problem into two subproblems by setting 
(x + -8) equal to 9.237604307 and -9.237604307.

Subproblem 1

x + -8 = 9.237604307 Simplifying x + -8 = 9.237604307 Reorder the terms: -8 + x = 9.237604307 Solving -8 + x = 9.237604307 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + x = 9.237604307 + 8 Combine like terms: -8 + 8 = 0 0 + x = 9.237604307 + 8 x = 9.237604307 + 8 Combine like terms: 9.237604307 + 8 = 17.237604307 x = 17.237604307 Simplifying x = 17.237604307

Subproblem 2

x + -8 = -9.237604307 Simplifying x + -8 = -9.237604307 Reorder the terms: -8 + x = -9.237604307 Solving -8 + x = -9.237604307 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + x = -9.237604307 + 8 Combine like terms: -8 + 8 = 0 0 + x = -9.237604307 + 8 x = -9.237604307 + 8 Combine like terms: -9.237604307 + 8 = -1.237604307 x = -1.237604307 Simplifying x = -1.237604307

Solution

The solution to the problem is based on the solutions from the subproblems. x = {17.237604307, -1.237604307}

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