6n^2+12n=17

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Solution for 6n^2+12n=17 equation:


Simplifying
6n2 + 12n = 17

Reorder the terms:
12n + 6n2 = 17

Solving
12n + 6n2 = 17

Solving for variable 'n'.

Reorder the terms:
-17 + 12n + 6n2 = 17 + -17

Combine like terms: 17 + -17 = 0
-17 + 12n + 6n2 = 0

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

Divide each side by '6'.
-2.833333333 + 2n + n2 = 0

Move the constant term to the right:

Add '2.833333333' to each side of the equation.
-2.833333333 + 2n + 2.833333333 + n2 = 0 + 2.833333333

Reorder the terms:
-2.833333333 + 2.833333333 + 2n + n2 = 0 + 2.833333333

Combine like terms: -2.833333333 + 2.833333333 = 0.000000000
0.000000000 + 2n + n2 = 0 + 2.833333333
2n + n2 = 0 + 2.833333333

Combine like terms: 0 + 2.833333333 = 2.833333333
2n + n2 = 2.833333333

The n term is 2n.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2n + 1 + n2 = 2.833333333 + 1

Reorder the terms:
1 + 2n + n2 = 2.833333333 + 1

Combine like terms: 2.833333333 + 1 = 3.833333333
1 + 2n + n2 = 3.833333333

Factor a perfect square on the left side:
(n + 1)(n + 1) = 3.833333333

Calculate the square root of the right side: 1.957890021

Break this problem into two subproblems by setting 
(n + 1) equal to 1.957890021 and -1.957890021.

Subproblem 1

n + 1 = 1.957890021 Simplifying n + 1 = 1.957890021 Reorder the terms: 1 + n = 1.957890021 Solving 1 + n = 1.957890021 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + n = 1.957890021 + -1 Combine like terms: 1 + -1 = 0 0 + n = 1.957890021 + -1 n = 1.957890021 + -1 Combine like terms: 1.957890021 + -1 = 0.957890021 n = 0.957890021 Simplifying n = 0.957890021

Subproblem 2

n + 1 = -1.957890021 Simplifying n + 1 = -1.957890021 Reorder the terms: 1 + n = -1.957890021 Solving 1 + n = -1.957890021 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + n = -1.957890021 + -1 Combine like terms: 1 + -1 = 0 0 + n = -1.957890021 + -1 n = -1.957890021 + -1 Combine like terms: -1.957890021 + -1 = -2.957890021 n = -2.957890021 Simplifying n = -2.957890021

Solution

The solution to the problem is based on the solutions from the subproblems. n = {0.957890021, -2.957890021}

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