(x)(x+8)=52

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Solution for (x)(x+8)=52 equation:


Simplifying
(x)(x + 8) = 52

Reorder the terms:
x(8 + x) = 52
(8 * x + x * x) = 52
(8x + x2) = 52

Solving
8x + x2 = 52

Solving for variable 'x'.

Reorder the terms:
-52 + 8x + x2 = 52 + -52

Combine like terms: 52 + -52 = 0
-52 + 8x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '52' to each side of the equation.
-52 + 8x + 52 + x2 = 0 + 52

Reorder the terms:
-52 + 52 + 8x + x2 = 0 + 52

Combine like terms: -52 + 52 = 0
0 + 8x + x2 = 0 + 52
8x + x2 = 0 + 52

Combine like terms: 0 + 52 = 52
8x + x2 = 52

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 = 52 + 16

Reorder the terms:
16 + 8x + x2 = 52 + 16

Combine like terms: 52 + 16 = 68
16 + 8x + x2 = 68

Factor a perfect square on the left side:
(x + 4)(x + 4) = 68

Calculate the square root of the right side: 8.246211251

Break this problem into two subproblems by setting 
(x + 4) equal to 8.246211251 and -8.246211251.

Subproblem 1

x + 4 = 8.246211251 Simplifying x + 4 = 8.246211251 Reorder the terms: 4 + x = 8.246211251 Solving 4 + x = 8.246211251 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 = 8.246211251 + -4 Combine like terms: 4 + -4 = 0 0 + x = 8.246211251 + -4 x = 8.246211251 + -4 Combine like terms: 8.246211251 + -4 = 4.246211251 x = 4.246211251 Simplifying x = 4.246211251

Subproblem 2

x + 4 = -8.246211251 Simplifying x + 4 = -8.246211251 Reorder the terms: 4 + x = -8.246211251 Solving 4 + x = -8.246211251 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 = -8.246211251 + -4 Combine like terms: 4 + -4 = 0 0 + x = -8.246211251 + -4 x = -8.246211251 + -4 Combine like terms: -8.246211251 + -4 = -12.246211251 x = -12.246211251 Simplifying x = -12.246211251

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.246211251, -12.246211251}

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