(x)(x+2)=68

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Solution for (x)(x+2)=68 equation:


Simplifying
(x)(x + 2) = 68

Reorder the terms:
x(2 + x) = 68
(2 * x + x * x) = 68
(2x + x2) = 68

Solving
2x + x2 = 68

Solving for variable 'x'.

Reorder the terms:
-68 + 2x + x2 = 68 + -68

Combine like terms: 68 + -68 = 0
-68 + 2x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '68' to each side of the equation.
-68 + 2x + 68 + x2 = 0 + 68

Reorder the terms:
-68 + 68 + 2x + x2 = 0 + 68

Combine like terms: -68 + 68 = 0
0 + 2x + x2 = 0 + 68
2x + x2 = 0 + 68

Combine like terms: 0 + 68 = 68
2x + x2 = 68

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2x + 1 + x2 = 68 + 1

Reorder the terms:
1 + 2x + x2 = 68 + 1

Combine like terms: 68 + 1 = 69
1 + 2x + x2 = 69

Factor a perfect square on the left side:
(x + 1)(x + 1) = 69

Calculate the square root of the right side: 8.306623863

Break this problem into two subproblems by setting 
(x + 1) equal to 8.306623863 and -8.306623863.

Subproblem 1

x + 1 = 8.306623863 Simplifying x + 1 = 8.306623863 Reorder the terms: 1 + x = 8.306623863 Solving 1 + x = 8.306623863 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 8.306623863 + -1 Combine like terms: 1 + -1 = 0 0 + x = 8.306623863 + -1 x = 8.306623863 + -1 Combine like terms: 8.306623863 + -1 = 7.306623863 x = 7.306623863 Simplifying x = 7.306623863

Subproblem 2

x + 1 = -8.306623863 Simplifying x + 1 = -8.306623863 Reorder the terms: 1 + x = -8.306623863 Solving 1 + x = -8.306623863 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -8.306623863 + -1 Combine like terms: 1 + -1 = 0 0 + x = -8.306623863 + -1 x = -8.306623863 + -1 Combine like terms: -8.306623863 + -1 = -9.306623863 x = -9.306623863 Simplifying x = -9.306623863

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.306623863, -9.306623863}

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