-x^2-6x=-41

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Solution for -x^2-6x=-41 equation:


Simplifying
-1x2 + -6x = -41

Reorder the terms:
-6x + -1x2 = -41

Solving
-6x + -1x2 = -41

Solving for variable 'x'.

Reorder the terms:
41 + -6x + -1x2 = -41 + 41

Combine like terms: -41 + 41 = 0
41 + -6x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-41 + 6x + x2 = 0

Move the constant term to the right:

Add '41' to each side of the equation.
-41 + 6x + 41 + x2 = 0 + 41

Reorder the terms:
-41 + 41 + 6x + x2 = 0 + 41

Combine like terms: -41 + 41 = 0
0 + 6x + x2 = 0 + 41
6x + x2 = 0 + 41

Combine like terms: 0 + 41 = 41
6x + x2 = 41

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 = 41 + 9

Reorder the terms:
9 + 6x + x2 = 41 + 9

Combine like terms: 41 + 9 = 50
9 + 6x + x2 = 50

Factor a perfect square on the left side:
(x + 3)(x + 3) = 50

Calculate the square root of the right side: 7.071067812

Break this problem into two subproblems by setting 
(x + 3) equal to 7.071067812 and -7.071067812.

Subproblem 1

x + 3 = 7.071067812 Simplifying x + 3 = 7.071067812 Reorder the terms: 3 + x = 7.071067812 Solving 3 + x = 7.071067812 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 = 7.071067812 + -3 Combine like terms: 3 + -3 = 0 0 + x = 7.071067812 + -3 x = 7.071067812 + -3 Combine like terms: 7.071067812 + -3 = 4.071067812 x = 4.071067812 Simplifying x = 4.071067812

Subproblem 2

x + 3 = -7.071067812 Simplifying x + 3 = -7.071067812 Reorder the terms: 3 + x = -7.071067812 Solving 3 + x = -7.071067812 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 = -7.071067812 + -3 Combine like terms: 3 + -3 = 0 0 + x = -7.071067812 + -3 x = -7.071067812 + -3 Combine like terms: -7.071067812 + -3 = -10.071067812 x = -10.071067812 Simplifying x = -10.071067812

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.071067812, -10.071067812}

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