n(n+2)=32

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Solution for n(n+2)=32 equation:


Simplifying
n(n + 2) = 32

Reorder the terms:
n(2 + n) = 32
(2 * n + n * n) = 32
(2n + n2) = 32

Solving
2n + n2 = 32

Solving for variable 'n'.

Reorder the terms:
-32 + 2n + n2 = 32 + -32

Combine like terms: 32 + -32 = 0
-32 + 2n + n2 = 0

Begin completing the square.

Move the constant term to the right:

Add '32' to each side of the equation.
-32 + 2n + 32 + n2 = 0 + 32

Reorder the terms:
-32 + 32 + 2n + n2 = 0 + 32

Combine like terms: -32 + 32 = 0
0 + 2n + n2 = 0 + 32
2n + n2 = 0 + 32

Combine like terms: 0 + 32 = 32
2n + n2 = 32

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

Add '1' to each side of the equation.
2n + 1 + n2 = 32 + 1

Reorder the terms:
1 + 2n + n2 = 32 + 1

Combine like terms: 32 + 1 = 33
1 + 2n + n2 = 33

Factor a perfect square on the left side:
(n + 1)(n + 1) = 33

Calculate the square root of the right side: 5.744562647

Break this problem into two subproblems by setting 
(n + 1) equal to 5.744562647 and -5.744562647.

Subproblem 1

n + 1 = 5.744562647 Simplifying n + 1 = 5.744562647 Reorder the terms: 1 + n = 5.744562647 Solving 1 + n = 5.744562647 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + n = 5.744562647 + -1 Combine like terms: 1 + -1 = 0 0 + n = 5.744562647 + -1 n = 5.744562647 + -1 Combine like terms: 5.744562647 + -1 = 4.744562647 n = 4.744562647 Simplifying n = 4.744562647

Subproblem 2

n + 1 = -5.744562647 Simplifying n + 1 = -5.744562647 Reorder the terms: 1 + n = -5.744562647 Solving 1 + n = -5.744562647 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + n = -5.744562647 + -1 Combine like terms: 1 + -1 = 0 0 + n = -5.744562647 + -1 n = -5.744562647 + -1 Combine like terms: -5.744562647 + -1 = -6.744562647 n = -6.744562647 Simplifying n = -6.744562647

Solution

The solution to the problem is based on the solutions from the subproblems. n = {4.744562647, -6.744562647}

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