x^2-6x-4200=0

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Solution for x^2-6x-4200=0 equation:


Simplifying
x2 + -6x + -4200 = 0

Reorder the terms:
-4200 + -6x + x2 = 0

Solving
-4200 + -6x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '4200' to each side of the equation.
-4200 + -6x + 4200 + x2 = 0 + 4200

Reorder the terms:
-4200 + 4200 + -6x + x2 = 0 + 4200

Combine like terms: -4200 + 4200 = 0
0 + -6x + x2 = 0 + 4200
-6x + x2 = 0 + 4200

Combine like terms: 0 + 4200 = 4200
-6x + x2 = 4200

The x term is -6x.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6x + 9 + x2 = 4200 + 9

Reorder the terms:
9 + -6x + x2 = 4200 + 9

Combine like terms: 4200 + 9 = 4209
9 + -6x + x2 = 4209

Factor a perfect square on the left side:
(x + -3)(x + -3) = 4209

Calculate the square root of the right side: 64.876806333

Break this problem into two subproblems by setting 
(x + -3) equal to 64.876806333 and -64.876806333.

Subproblem 1

x + -3 = 64.876806333 Simplifying x + -3 = 64.876806333 Reorder the terms: -3 + x = 64.876806333 Solving -3 + x = 64.876806333 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = 64.876806333 + 3 Combine like terms: -3 + 3 = 0 0 + x = 64.876806333 + 3 x = 64.876806333 + 3 Combine like terms: 64.876806333 + 3 = 67.876806333 x = 67.876806333 Simplifying x = 67.876806333

Subproblem 2

x + -3 = -64.876806333 Simplifying x + -3 = -64.876806333 Reorder the terms: -3 + x = -64.876806333 Solving -3 + x = -64.876806333 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = -64.876806333 + 3 Combine like terms: -3 + 3 = 0 0 + x = -64.876806333 + 3 x = -64.876806333 + 3 Combine like terms: -64.876806333 + 3 = -61.876806333 x = -61.876806333 Simplifying x = -61.876806333

Solution

The solution to the problem is based on the solutions from the subproblems. x = {67.876806333, -61.876806333}

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