(x^2)-800x-64=0

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Solution for (x^2)-800x-64=0 equation:


Simplifying
(x2) + -800x + -64 = 0
x2 + -800x + -64 = 0

Reorder the terms:
-64 + -800x + x2 = 0

Solving
-64 + -800x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '64' to each side of the equation.
-64 + -800x + 64 + x2 = 0 + 64

Reorder the terms:
-64 + 64 + -800x + x2 = 0 + 64

Combine like terms: -64 + 64 = 0
0 + -800x + x2 = 0 + 64
-800x + x2 = 0 + 64

Combine like terms: 0 + 64 = 64
-800x + x2 = 64

The x term is -800x.  Take half its coefficient (-400).
Square it (160000) and add it to both sides.

Add '160000' to each side of the equation.
-800x + 160000 + x2 = 64 + 160000

Reorder the terms:
160000 + -800x + x2 = 64 + 160000

Combine like terms: 64 + 160000 = 160064
160000 + -800x + x2 = 160064

Factor a perfect square on the left side:
(x + -400)(x + -400) = 160064

Calculate the square root of the right side: 400.079992002

Break this problem into two subproblems by setting 
(x + -400) equal to 400.079992002 and -400.079992002.

Subproblem 1

x + -400 = 400.079992002 Simplifying x + -400 = 400.079992002 Reorder the terms: -400 + x = 400.079992002 Solving -400 + x = 400.079992002 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '400' to each side of the equation. -400 + 400 + x = 400.079992002 + 400 Combine like terms: -400 + 400 = 0 0 + x = 400.079992002 + 400 x = 400.079992002 + 400 Combine like terms: 400.079992002 + 400 = 800.079992002 x = 800.079992002 Simplifying x = 800.079992002

Subproblem 2

x + -400 = -400.079992002 Simplifying x + -400 = -400.079992002 Reorder the terms: -400 + x = -400.079992002 Solving -400 + x = -400.079992002 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '400' to each side of the equation. -400 + 400 + x = -400.079992002 + 400 Combine like terms: -400 + 400 = 0 0 + x = -400.079992002 + 400 x = -400.079992002 + 400 Combine like terms: -400.079992002 + 400 = -0.079992002 x = -0.079992002 Simplifying x = -0.079992002

Solution

The solution to the problem is based on the solutions from the subproblems. x = {800.079992002, -0.079992002}

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