n^2-8n-6=n

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Solution for n^2-8n-6=n equation:


Simplifying
n2 + -8n + -6 = n

Reorder the terms:
-6 + -8n + n2 = n

Solving
-6 + -8n + n2 = n

Solving for variable 'n'.

Reorder the terms:
-6 + -8n + -1n + n2 = n + -1n

Combine like terms: -8n + -1n = -9n
-6 + -9n + n2 = n + -1n

Combine like terms: n + -1n = 0
-6 + -9n + n2 = 0

Begin completing the square.

Move the constant term to the right:

Add '6' to each side of the equation.
-6 + -9n + 6 + n2 = 0 + 6

Reorder the terms:
-6 + 6 + -9n + n2 = 0 + 6

Combine like terms: -6 + 6 = 0
0 + -9n + n2 = 0 + 6
-9n + n2 = 0 + 6

Combine like terms: 0 + 6 = 6
-9n + n2 = 6

The n term is -9n.  Take half its coefficient (-4.5).
Square it (20.25) and add it to both sides.

Add '20.25' to each side of the equation.
-9n + 20.25 + n2 = 6 + 20.25

Reorder the terms:
20.25 + -9n + n2 = 6 + 20.25

Combine like terms: 6 + 20.25 = 26.25
20.25 + -9n + n2 = 26.25

Factor a perfect square on the left side:
(n + -4.5)(n + -4.5) = 26.25

Calculate the square root of the right side: 5.123475383

Break this problem into two subproblems by setting 
(n + -4.5) equal to 5.123475383 and -5.123475383.

Subproblem 1

n + -4.5 = 5.123475383 Simplifying n + -4.5 = 5.123475383 Reorder the terms: -4.5 + n = 5.123475383 Solving -4.5 + n = 5.123475383 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '4.5' to each side of the equation. -4.5 + 4.5 + n = 5.123475383 + 4.5 Combine like terms: -4.5 + 4.5 = 0.0 0.0 + n = 5.123475383 + 4.5 n = 5.123475383 + 4.5 Combine like terms: 5.123475383 + 4.5 = 9.623475383 n = 9.623475383 Simplifying n = 9.623475383

Subproblem 2

n + -4.5 = -5.123475383 Simplifying n + -4.5 = -5.123475383 Reorder the terms: -4.5 + n = -5.123475383 Solving -4.5 + n = -5.123475383 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '4.5' to each side of the equation. -4.5 + 4.5 + n = -5.123475383 + 4.5 Combine like terms: -4.5 + 4.5 = 0.0 0.0 + n = -5.123475383 + 4.5 n = -5.123475383 + 4.5 Combine like terms: -5.123475383 + 4.5 = -0.623475383 n = -0.623475383 Simplifying n = -0.623475383

Solution

The solution to the problem is based on the solutions from the subproblems. n = {9.623475383, -0.623475383}

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