-x^2-6x+50=18

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Solution for -x^2-6x+50=18 equation:


Simplifying
-1x2 + -6x + 50 = 18

Reorder the terms:
50 + -6x + -1x2 = 18

Solving
50 + -6x + -1x2 = 18

Solving for variable 'x'.

Reorder the terms:
50 + -18 + -6x + -1x2 = 18 + -18

Combine like terms: 50 + -18 = 32
32 + -6x + -1x2 = 18 + -18

Combine like terms: 18 + -18 = 0
32 + -6x + -1x2 = 0

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

Divide each side by '-1'.
-32 + 6x + x2 = 0

Move the constant term to the right:

Add '32' to each side of the equation.
-32 + 6x + 32 + x2 = 0 + 32

Reorder the terms:
-32 + 32 + 6x + x2 = 0 + 32

Combine like terms: -32 + 32 = 0
0 + 6x + x2 = 0 + 32
6x + x2 = 0 + 32

Combine like terms: 0 + 32 = 32
6x + x2 = 32

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 = 32 + 9

Reorder the terms:
9 + 6x + x2 = 32 + 9

Combine like terms: 32 + 9 = 41
9 + 6x + x2 = 41

Factor a perfect square on the left side:
(x + 3)(x + 3) = 41

Calculate the square root of the right side: 6.403124237

Break this problem into two subproblems by setting 
(x + 3) equal to 6.403124237 and -6.403124237.

Subproblem 1

x + 3 = 6.403124237 Simplifying x + 3 = 6.403124237 Reorder the terms: 3 + x = 6.403124237 Solving 3 + x = 6.403124237 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 = 6.403124237 + -3 Combine like terms: 3 + -3 = 0 0 + x = 6.403124237 + -3 x = 6.403124237 + -3 Combine like terms: 6.403124237 + -3 = 3.403124237 x = 3.403124237 Simplifying x = 3.403124237

Subproblem 2

x + 3 = -6.403124237 Simplifying x + 3 = -6.403124237 Reorder the terms: 3 + x = -6.403124237 Solving 3 + x = -6.403124237 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 = -6.403124237 + -3 Combine like terms: 3 + -3 = 0 0 + x = -6.403124237 + -3 x = -6.403124237 + -3 Combine like terms: -6.403124237 + -3 = -9.403124237 x = -9.403124237 Simplifying x = -9.403124237

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.403124237, -9.403124237}

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