11n^2+4n=2

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Solution for 11n^2+4n=2 equation:


Simplifying
11n2 + 4n = 2

Reorder the terms:
4n + 11n2 = 2

Solving
4n + 11n2 = 2

Solving for variable 'n'.

Reorder the terms:
-2 + 4n + 11n2 = 2 + -2

Combine like terms: 2 + -2 = 0
-2 + 4n + 11n2 = 0

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

Divide each side by '11'.
-0.1818181818 + 0.3636363636n + n2 = 0

Move the constant term to the right:

Add '0.1818181818' to each side of the equation.
-0.1818181818 + 0.3636363636n + 0.1818181818 + n2 = 0 + 0.1818181818

Reorder the terms:
-0.1818181818 + 0.1818181818 + 0.3636363636n + n2 = 0 + 0.1818181818

Combine like terms: -0.1818181818 + 0.1818181818 = 0.0000000000
0.0000000000 + 0.3636363636n + n2 = 0 + 0.1818181818
0.3636363636n + n2 = 0 + 0.1818181818

Combine like terms: 0 + 0.1818181818 = 0.1818181818
0.3636363636n + n2 = 0.1818181818

The n term is 0.3636363636n.  Take half its coefficient (0.1818181818).
Square it (0.03305785123) and add it to both sides.

Add '0.03305785123' to each side of the equation.
0.3636363636n + 0.03305785123 + n2 = 0.1818181818 + 0.03305785123

Reorder the terms:
0.03305785123 + 0.3636363636n + n2 = 0.1818181818 + 0.03305785123

Combine like terms: 0.1818181818 + 0.03305785123 = 0.21487603303
0.03305785123 + 0.3636363636n + n2 = 0.21487603303

Factor a perfect square on the left side:
(n + 0.1818181818)(n + 0.1818181818) = 0.21487603303

Calculate the square root of the right side: 0.463547228

Break this problem into two subproblems by setting 
(n + 0.1818181818) equal to 0.463547228 and -0.463547228.

Subproblem 1

n + 0.1818181818 = 0.463547228 Simplifying n + 0.1818181818 = 0.463547228 Reorder the terms: 0.1818181818 + n = 0.463547228 Solving 0.1818181818 + n = 0.463547228 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-0.1818181818' to each side of the equation. 0.1818181818 + -0.1818181818 + n = 0.463547228 + -0.1818181818 Combine like terms: 0.1818181818 + -0.1818181818 = 0.0000000000 0.0000000000 + n = 0.463547228 + -0.1818181818 n = 0.463547228 + -0.1818181818 Combine like terms: 0.463547228 + -0.1818181818 = 0.2817290462 n = 0.2817290462 Simplifying n = 0.2817290462

Subproblem 2

n + 0.1818181818 = -0.463547228 Simplifying n + 0.1818181818 = -0.463547228 Reorder the terms: 0.1818181818 + n = -0.463547228 Solving 0.1818181818 + n = -0.463547228 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-0.1818181818' to each side of the equation. 0.1818181818 + -0.1818181818 + n = -0.463547228 + -0.1818181818 Combine like terms: 0.1818181818 + -0.1818181818 = 0.0000000000 0.0000000000 + n = -0.463547228 + -0.1818181818 n = -0.463547228 + -0.1818181818 Combine like terms: -0.463547228 + -0.1818181818 = -0.6453654098 n = -0.6453654098 Simplifying n = -0.6453654098

Solution

The solution to the problem is based on the solutions from the subproblems. n = {0.2817290462, -0.6453654098}

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