x(x+8)=6336

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Solution for x(x+8)=6336 equation:


Simplifying
x(x + 8) = 6336

Reorder the terms:
x(8 + x) = 6336
(8 * x + x * x) = 6336
(8x + x2) = 6336

Solving
8x + x2 = 6336

Solving for variable 'x'.

Reorder the terms:
-6336 + 8x + x2 = 6336 + -6336

Combine like terms: 6336 + -6336 = 0
-6336 + 8x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '6336' to each side of the equation.
-6336 + 8x + 6336 + x2 = 0 + 6336

Reorder the terms:
-6336 + 6336 + 8x + x2 = 0 + 6336

Combine like terms: -6336 + 6336 = 0
0 + 8x + x2 = 0 + 6336
8x + x2 = 0 + 6336

Combine like terms: 0 + 6336 = 6336
8x + x2 = 6336

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 = 6336 + 16

Reorder the terms:
16 + 8x + x2 = 6336 + 16

Combine like terms: 6336 + 16 = 6352
16 + 8x + x2 = 6352

Factor a perfect square on the left side:
(x + 4)(x + 4) = 6352

Calculate the square root of the right side: 79.699435381

Break this problem into two subproblems by setting 
(x + 4) equal to 79.699435381 and -79.699435381.

Subproblem 1

x + 4 = 79.699435381 Simplifying x + 4 = 79.699435381 Reorder the terms: 4 + x = 79.699435381 Solving 4 + x = 79.699435381 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 = 79.699435381 + -4 Combine like terms: 4 + -4 = 0 0 + x = 79.699435381 + -4 x = 79.699435381 + -4 Combine like terms: 79.699435381 + -4 = 75.699435381 x = 75.699435381 Simplifying x = 75.699435381

Subproblem 2

x + 4 = -79.699435381 Simplifying x + 4 = -79.699435381 Reorder the terms: 4 + x = -79.699435381 Solving 4 + x = -79.699435381 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 = -79.699435381 + -4 Combine like terms: 4 + -4 = 0 0 + x = -79.699435381 + -4 x = -79.699435381 + -4 Combine like terms: -79.699435381 + -4 = -83.699435381 x = -83.699435381 Simplifying x = -83.699435381

Solution

The solution to the problem is based on the solutions from the subproblems. x = {75.699435381, -83.699435381}

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