x^2+6x-47=0

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Solution for x^2+6x-47=0 equation:


Simplifying
x2 + 6x + -47 = 0

Reorder the terms:
-47 + 6x + x2 = 0

Solving
-47 + 6x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '47' to each side of the equation.
-47 + 6x + 47 + x2 = 0 + 47

Reorder the terms:
-47 + 47 + 6x + x2 = 0 + 47

Combine like terms: -47 + 47 = 0
0 + 6x + x2 = 0 + 47
6x + x2 = 0 + 47

Combine like terms: 0 + 47 = 47
6x + x2 = 47

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 = 47 + 9

Reorder the terms:
9 + 6x + x2 = 47 + 9

Combine like terms: 47 + 9 = 56
9 + 6x + x2 = 56

Factor a perfect square on the left side:
(x + 3)(x + 3) = 56

Calculate the square root of the right side: 7.483314774

Break this problem into two subproblems by setting 
(x + 3) equal to 7.483314774 and -7.483314774.

Subproblem 1

x + 3 = 7.483314774 Simplifying x + 3 = 7.483314774 Reorder the terms: 3 + x = 7.483314774 Solving 3 + x = 7.483314774 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 = 7.483314774 + -3 Combine like terms: 3 + -3 = 0 0 + x = 7.483314774 + -3 x = 7.483314774 + -3 Combine like terms: 7.483314774 + -3 = 4.483314774 x = 4.483314774 Simplifying x = 4.483314774

Subproblem 2

x + 3 = -7.483314774 Simplifying x + 3 = -7.483314774 Reorder the terms: 3 + x = -7.483314774 Solving 3 + x = -7.483314774 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 = -7.483314774 + -3 Combine like terms: 3 + -3 = 0 0 + x = -7.483314774 + -3 x = -7.483314774 + -3 Combine like terms: -7.483314774 + -3 = -10.483314774 x = -10.483314774 Simplifying x = -10.483314774

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.483314774, -10.483314774}

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