x^2-41x=8

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Solution for x^2-41x=8 equation:


Simplifying
x2 + -41x = 8

Reorder the terms:
-41x + x2 = 8

Solving
-41x + x2 = 8

Solving for variable 'x'.

Reorder the terms:
-8 + -41x + x2 = 8 + -8

Combine like terms: 8 + -8 = 0
-8 + -41x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '8' to each side of the equation.
-8 + -41x + 8 + x2 = 0 + 8

Reorder the terms:
-8 + 8 + -41x + x2 = 0 + 8

Combine like terms: -8 + 8 = 0
0 + -41x + x2 = 0 + 8
-41x + x2 = 0 + 8

Combine like terms: 0 + 8 = 8
-41x + x2 = 8

The x term is -41x.  Take half its coefficient (-20.5).
Square it (420.25) and add it to both sides.

Add '420.25' to each side of the equation.
-41x + 420.25 + x2 = 8 + 420.25

Reorder the terms:
420.25 + -41x + x2 = 8 + 420.25

Combine like terms: 8 + 420.25 = 428.25
420.25 + -41x + x2 = 428.25

Factor a perfect square on the left side:
(x + -20.5)(x + -20.5) = 428.25

Calculate the square root of the right side: 20.694202087

Break this problem into two subproblems by setting 
(x + -20.5) equal to 20.694202087 and -20.694202087.

Subproblem 1

x + -20.5 = 20.694202087 Simplifying x + -20.5 = 20.694202087 Reorder the terms: -20.5 + x = 20.694202087 Solving -20.5 + x = 20.694202087 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '20.5' to each side of the equation. -20.5 + 20.5 + x = 20.694202087 + 20.5 Combine like terms: -20.5 + 20.5 = 0.0 0.0 + x = 20.694202087 + 20.5 x = 20.694202087 + 20.5 Combine like terms: 20.694202087 + 20.5 = 41.194202087 x = 41.194202087 Simplifying x = 41.194202087

Subproblem 2

x + -20.5 = -20.694202087 Simplifying x + -20.5 = -20.694202087 Reorder the terms: -20.5 + x = -20.694202087 Solving -20.5 + x = -20.694202087 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '20.5' to each side of the equation. -20.5 + 20.5 + x = -20.694202087 + 20.5 Combine like terms: -20.5 + 20.5 = 0.0 0.0 + x = -20.694202087 + 20.5 x = -20.694202087 + 20.5 Combine like terms: -20.694202087 + 20.5 = -0.194202087 x = -0.194202087 Simplifying x = -0.194202087

Solution

The solution to the problem is based on the solutions from the subproblems. x = {41.194202087, -0.194202087}

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