(8*2)*(5-n)=n*n-2

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Solution for (8*2)*(5-n)=n*n-2 equation:


Simplifying
(8 * 2)(5 + -1n) = n * n + -2

Multiply 8 * 2
(16)(5 + -1n) = n * n + -2
(5 * 16 + -1n * 16) = n * n + -2
(80 + -16n) = n * n + -2

Multiply n * n
80 + -16n = n2 + -2

Reorder the terms:
80 + -16n = -2 + n2

Solving
80 + -16n = -2 + n2

Solving for variable 'n'.

Reorder the terms:
80 + 2 + -16n + -1n2 = -2 + n2 + 2 + -1n2

Combine like terms: 80 + 2 = 82
82 + -16n + -1n2 = -2 + n2 + 2 + -1n2

Reorder the terms:
82 + -16n + -1n2 = -2 + 2 + n2 + -1n2

Combine like terms: -2 + 2 = 0
82 + -16n + -1n2 = 0 + n2 + -1n2
82 + -16n + -1n2 = n2 + -1n2

Combine like terms: n2 + -1n2 = 0
82 + -16n + -1n2 = 0

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

Divide each side by '-1'.
-82 + 16n + n2 = 0

Move the constant term to the right:

Add '82' to each side of the equation.
-82 + 16n + 82 + n2 = 0 + 82

Reorder the terms:
-82 + 82 + 16n + n2 = 0 + 82

Combine like terms: -82 + 82 = 0
0 + 16n + n2 = 0 + 82
16n + n2 = 0 + 82

Combine like terms: 0 + 82 = 82
16n + n2 = 82

The n term is 16n.  Take half its coefficient (8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
16n + 64 + n2 = 82 + 64

Reorder the terms:
64 + 16n + n2 = 82 + 64

Combine like terms: 82 + 64 = 146
64 + 16n + n2 = 146

Factor a perfect square on the left side:
(n + 8)(n + 8) = 146

Calculate the square root of the right side: 12.083045974

Break this problem into two subproblems by setting 
(n + 8) equal to 12.083045974 and -12.083045974.

Subproblem 1

n + 8 = 12.083045974 Simplifying n + 8 = 12.083045974 Reorder the terms: 8 + n = 12.083045974 Solving 8 + n = 12.083045974 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + n = 12.083045974 + -8 Combine like terms: 8 + -8 = 0 0 + n = 12.083045974 + -8 n = 12.083045974 + -8 Combine like terms: 12.083045974 + -8 = 4.083045974 n = 4.083045974 Simplifying n = 4.083045974

Subproblem 2

n + 8 = -12.083045974 Simplifying n + 8 = -12.083045974 Reorder the terms: 8 + n = -12.083045974 Solving 8 + n = -12.083045974 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + n = -12.083045974 + -8 Combine like terms: 8 + -8 = 0 0 + n = -12.083045974 + -8 n = -12.083045974 + -8 Combine like terms: -12.083045974 + -8 = -20.083045974 n = -20.083045974 Simplifying n = -20.083045974

Solution

The solution to the problem is based on the solutions from the subproblems. n = {4.083045974, -20.083045974}

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