-8x-x^2+63=0

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Solution for -8x-x^2+63=0 equation:


Simplifying
-8x + -1x2 + 63 = 0

Reorder the terms:
63 + -8x + -1x2 = 0

Solving
63 + -8x + -1x2 = 0

Solving for variable 'x'.

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

Divide each side by '-1'.
-63 + 8x + x2 = 0

Move the constant term to the right:

Add '63' to each side of the equation.
-63 + 8x + 63 + x2 = 0 + 63

Reorder the terms:
-63 + 63 + 8x + x2 = 0 + 63

Combine like terms: -63 + 63 = 0
0 + 8x + x2 = 0 + 63
8x + x2 = 0 + 63

Combine like terms: 0 + 63 = 63
8x + x2 = 63

The x term is 8x.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8x + 16 + x2 = 63 + 16

Reorder the terms:
16 + 8x + x2 = 63 + 16

Combine like terms: 63 + 16 = 79
16 + 8x + x2 = 79

Factor a perfect square on the left side:
(x + 4)(x + 4) = 79

Calculate the square root of the right side: 8.888194417

Break this problem into two subproblems by setting 
(x + 4) equal to 8.888194417 and -8.888194417.

Subproblem 1

x + 4 = 8.888194417 Simplifying x + 4 = 8.888194417 Reorder the terms: 4 + x = 8.888194417 Solving 4 + x = 8.888194417 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = 8.888194417 + -4 Combine like terms: 4 + -4 = 0 0 + x = 8.888194417 + -4 x = 8.888194417 + -4 Combine like terms: 8.888194417 + -4 = 4.888194417 x = 4.888194417 Simplifying x = 4.888194417

Subproblem 2

x + 4 = -8.888194417 Simplifying x + 4 = -8.888194417 Reorder the terms: 4 + x = -8.888194417 Solving 4 + x = -8.888194417 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = -8.888194417 + -4 Combine like terms: 4 + -4 = 0 0 + x = -8.888194417 + -4 x = -8.888194417 + -4 Combine like terms: -8.888194417 + -4 = -12.888194417 x = -12.888194417 Simplifying x = -12.888194417

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.888194417, -12.888194417}

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