4n^2+-11n=11

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


Simplifying
4n2 + -11n = 11

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

Solving
-11n + 4n2 = 11

Solving for variable 'n'.

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

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

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

Divide each side by '4'.
-2.75 + -2.75n + n2 = 0

Move the constant term to the right:

Add '2.75' to each side of the equation.
-2.75 + -2.75n + 2.75 + n2 = 0 + 2.75

Reorder the terms:
-2.75 + 2.75 + -2.75n + n2 = 0 + 2.75

Combine like terms: -2.75 + 2.75 = 0.00
0.00 + -2.75n + n2 = 0 + 2.75
-2.75n + n2 = 0 + 2.75

Combine like terms: 0 + 2.75 = 2.75
-2.75n + n2 = 2.75

The n term is -2.75n.  Take half its coefficient (-1.375).
Square it (1.890625) and add it to both sides.

Add '1.890625' to each side of the equation.
-2.75n + 1.890625 + n2 = 2.75 + 1.890625

Reorder the terms:
1.890625 + -2.75n + n2 = 2.75 + 1.890625

Combine like terms: 2.75 + 1.890625 = 4.640625
1.890625 + -2.75n + n2 = 4.640625

Factor a perfect square on the left side:
(n + -1.375)(n + -1.375) = 4.640625

Calculate the square root of the right side: 2.154210992

Break this problem into two subproblems by setting 
(n + -1.375) equal to 2.154210992 and -2.154210992.

Subproblem 1

n + -1.375 = 2.154210992 Simplifying n + -1.375 = 2.154210992 Reorder the terms: -1.375 + n = 2.154210992 Solving -1.375 + n = 2.154210992 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '1.375' to each side of the equation. -1.375 + 1.375 + n = 2.154210992 + 1.375 Combine like terms: -1.375 + 1.375 = 0.000 0.000 + n = 2.154210992 + 1.375 n = 2.154210992 + 1.375 Combine like terms: 2.154210992 + 1.375 = 3.529210992 n = 3.529210992 Simplifying n = 3.529210992

Subproblem 2

n + -1.375 = -2.154210992 Simplifying n + -1.375 = -2.154210992 Reorder the terms: -1.375 + n = -2.154210992 Solving -1.375 + n = -2.154210992 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '1.375' to each side of the equation. -1.375 + 1.375 + n = -2.154210992 + 1.375 Combine like terms: -1.375 + 1.375 = 0.000 0.000 + n = -2.154210992 + 1.375 n = -2.154210992 + 1.375 Combine like terms: -2.154210992 + 1.375 = -0.779210992 n = -0.779210992 Simplifying n = -0.779210992

Solution

The solution to the problem is based on the solutions from the subproblems. n = {3.529210992, -0.779210992}

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