x^2-10x-407=0

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Solution for x^2-10x-407=0 equation:


Simplifying
x2 + -10x + -407 = 0

Reorder the terms:
-407 + -10x + x2 = 0

Solving
-407 + -10x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '407' to each side of the equation.
-407 + -10x + 407 + x2 = 0 + 407

Reorder the terms:
-407 + 407 + -10x + x2 = 0 + 407

Combine like terms: -407 + 407 = 0
0 + -10x + x2 = 0 + 407
-10x + x2 = 0 + 407

Combine like terms: 0 + 407 = 407
-10x + x2 = 407

The x term is -10x.  Take half its coefficient (-5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
-10x + 25 + x2 = 407 + 25

Reorder the terms:
25 + -10x + x2 = 407 + 25

Combine like terms: 407 + 25 = 432
25 + -10x + x2 = 432

Factor a perfect square on the left side:
(x + -5)(x + -5) = 432

Calculate the square root of the right side: 20.784609691

Break this problem into two subproblems by setting 
(x + -5) equal to 20.784609691 and -20.784609691.

Subproblem 1

x + -5 = 20.784609691 Simplifying x + -5 = 20.784609691 Reorder the terms: -5 + x = 20.784609691 Solving -5 + x = 20.784609691 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x = 20.784609691 + 5 Combine like terms: -5 + 5 = 0 0 + x = 20.784609691 + 5 x = 20.784609691 + 5 Combine like terms: 20.784609691 + 5 = 25.784609691 x = 25.784609691 Simplifying x = 25.784609691

Subproblem 2

x + -5 = -20.784609691 Simplifying x + -5 = -20.784609691 Reorder the terms: -5 + x = -20.784609691 Solving -5 + x = -20.784609691 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x = -20.784609691 + 5 Combine like terms: -5 + 5 = 0 0 + x = -20.784609691 + 5 x = -20.784609691 + 5 Combine like terms: -20.784609691 + 5 = -15.784609691 x = -15.784609691 Simplifying x = -15.784609691

Solution

The solution to the problem is based on the solutions from the subproblems. x = {25.784609691, -15.784609691}

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