4n^2+3n-11=0

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Solution for 4n^2+3n-11=0 equation:


Simplifying
4n2 + 3n + -11 = 0

Reorder the terms:
-11 + 3n + 4n2 = 0

Solving
-11 + 3n + 4n2 = 0

Solving for variable 'n'.

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

Divide each side by '4'.
-2.75 + 0.75n + n2 = 0

Move the constant term to the right:

Add '2.75' to each side of the equation.
-2.75 + 0.75n + 2.75 + n2 = 0 + 2.75

Reorder the terms:
-2.75 + 2.75 + 0.75n + n2 = 0 + 2.75

Combine like terms: -2.75 + 2.75 = 0.00
0.00 + 0.75n + n2 = 0 + 2.75
0.75n + n2 = 0 + 2.75

Combine like terms: 0 + 2.75 = 2.75
0.75n + n2 = 2.75

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 = 2.75 + 0.140625

Reorder the terms:
0.140625 + 0.75n + n2 = 2.75 + 0.140625

Combine like terms: 2.75 + 0.140625 = 2.890625
0.140625 + 0.75n + n2 = 2.890625

Factor a perfect square on the left side:
(n + 0.375)(n + 0.375) = 2.890625

Calculate the square root of the right side: 1.700183814

Break this problem into two subproblems by setting 
(n + 0.375) equal to 1.700183814 and -1.700183814.

Subproblem 1

n + 0.375 = 1.700183814 Simplifying n + 0.375 = 1.700183814 Reorder the terms: 0.375 + n = 1.700183814 Solving 0.375 + n = 1.700183814 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 = 1.700183814 + -0.375 Combine like terms: 0.375 + -0.375 = 0.000 0.000 + n = 1.700183814 + -0.375 n = 1.700183814 + -0.375 Combine like terms: 1.700183814 + -0.375 = 1.325183814 n = 1.325183814 Simplifying n = 1.325183814

Subproblem 2

n + 0.375 = -1.700183814 Simplifying n + 0.375 = -1.700183814 Reorder the terms: 0.375 + n = -1.700183814 Solving 0.375 + n = -1.700183814 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 = -1.700183814 + -0.375 Combine like terms: 0.375 + -0.375 = 0.000 0.000 + n = -1.700183814 + -0.375 n = -1.700183814 + -0.375 Combine like terms: -1.700183814 + -0.375 = -2.075183814 n = -2.075183814 Simplifying n = -2.075183814

Solution

The solution to the problem is based on the solutions from the subproblems. n = {1.325183814, -2.075183814}

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