8n^2=-6n+11

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Solution for 8n^2=-6n+11 equation:


Simplifying
8n2 = -6n + 11

Reorder the terms:
8n2 = 11 + -6n

Solving
8n2 = 11 + -6n

Solving for variable 'n'.

Reorder the terms:
-11 + 6n + 8n2 = 11 + -6n + -11 + 6n

Reorder the terms:
-11 + 6n + 8n2 = 11 + -11 + -6n + 6n

Combine like terms: 11 + -11 = 0
-11 + 6n + 8n2 = 0 + -6n + 6n
-11 + 6n + 8n2 = -6n + 6n

Combine like terms: -6n + 6n = 0
-11 + 6n + 8n2 = 0

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

Divide each side by '8'.
-1.375 + 0.75n + n2 = 0

Move the constant term to the right:

Add '1.375' to each side of the equation.
-1.375 + 0.75n + 1.375 + n2 = 0 + 1.375

Reorder the terms:
-1.375 + 1.375 + 0.75n + n2 = 0 + 1.375

Combine like terms: -1.375 + 1.375 = 0.000
0.000 + 0.75n + n2 = 0 + 1.375
0.75n + n2 = 0 + 1.375

Combine like terms: 0 + 1.375 = 1.375
0.75n + n2 = 1.375

The n term is 0.75n.  Take half its coefficient (0.375).
Square it (0.140625) and add it to both sides.

Add '0.140625' to each side of the equation.
0.75n + 0.140625 + n2 = 1.375 + 0.140625

Reorder the terms:
0.140625 + 0.75n + n2 = 1.375 + 0.140625

Combine like terms: 1.375 + 0.140625 = 1.515625
0.140625 + 0.75n + n2 = 1.515625

Factor a perfect square on the left side:
(n + 0.375)(n + 0.375) = 1.515625

Calculate the square root of the right side: 1.231107225

Break this problem into two subproblems by setting 
(n + 0.375) equal to 1.231107225 and -1.231107225.

Subproblem 1

n + 0.375 = 1.231107225 Simplifying n + 0.375 = 1.231107225 Reorder the terms: 0.375 + n = 1.231107225 Solving 0.375 + n = 1.231107225 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-0.375' to each side of the equation. 0.375 + -0.375 + n = 1.231107225 + -0.375 Combine like terms: 0.375 + -0.375 = 0.000 0.000 + n = 1.231107225 + -0.375 n = 1.231107225 + -0.375 Combine like terms: 1.231107225 + -0.375 = 0.856107225 n = 0.856107225 Simplifying n = 0.856107225

Subproblem 2

n + 0.375 = -1.231107225 Simplifying n + 0.375 = -1.231107225 Reorder the terms: 0.375 + n = -1.231107225 Solving 0.375 + n = -1.231107225 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-0.375' to each side of the equation. 0.375 + -0.375 + n = -1.231107225 + -0.375 Combine like terms: 0.375 + -0.375 = 0.000 0.000 + n = -1.231107225 + -0.375 n = -1.231107225 + -0.375 Combine like terms: -1.231107225 + -0.375 = -1.606107225 n = -1.606107225 Simplifying n = -1.606107225

Solution

The solution to the problem is based on the solutions from the subproblems. n = {0.856107225, -1.606107225}

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