x^2-64x-1920=0

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Solution for x^2-64x-1920=0 equation:


Simplifying
x2 + -64x + -1920 = 0

Reorder the terms:
-1920 + -64x + x2 = 0

Solving
-1920 + -64x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '1920' to each side of the equation.
-1920 + -64x + 1920 + x2 = 0 + 1920

Reorder the terms:
-1920 + 1920 + -64x + x2 = 0 + 1920

Combine like terms: -1920 + 1920 = 0
0 + -64x + x2 = 0 + 1920
-64x + x2 = 0 + 1920

Combine like terms: 0 + 1920 = 1920
-64x + x2 = 1920

The x term is -64x.  Take half its coefficient (-32).
Square it (1024) and add it to both sides.

Add '1024' to each side of the equation.
-64x + 1024 + x2 = 1920 + 1024

Reorder the terms:
1024 + -64x + x2 = 1920 + 1024

Combine like terms: 1920 + 1024 = 2944
1024 + -64x + x2 = 2944

Factor a perfect square on the left side:
(x + -32)(x + -32) = 2944

Calculate the square root of the right side: 54.258639865

Break this problem into two subproblems by setting 
(x + -32) equal to 54.258639865 and -54.258639865.

Subproblem 1

x + -32 = 54.258639865 Simplifying x + -32 = 54.258639865 Reorder the terms: -32 + x = 54.258639865 Solving -32 + x = 54.258639865 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '32' to each side of the equation. -32 + 32 + x = 54.258639865 + 32 Combine like terms: -32 + 32 = 0 0 + x = 54.258639865 + 32 x = 54.258639865 + 32 Combine like terms: 54.258639865 + 32 = 86.258639865 x = 86.258639865 Simplifying x = 86.258639865

Subproblem 2

x + -32 = -54.258639865 Simplifying x + -32 = -54.258639865 Reorder the terms: -32 + x = -54.258639865 Solving -32 + x = -54.258639865 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '32' to each side of the equation. -32 + 32 + x = -54.258639865 + 32 Combine like terms: -32 + 32 = 0 0 + x = -54.258639865 + 32 x = -54.258639865 + 32 Combine like terms: -54.258639865 + 32 = -22.258639865 x = -22.258639865 Simplifying x = -22.258639865

Solution

The solution to the problem is based on the solutions from the subproblems. x = {86.258639865, -22.258639865}

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