N^2-12N-36=0

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Solution for N^2-12N-36=0 equation:


Simplifying
N2 + -12N + -36 = 0

Reorder the terms:
-36 + -12N + N2 = 0

Solving
-36 + -12N + N2 = 0

Solving for variable 'N'.

Begin completing the square.

Move the constant term to the right:

Add '36' to each side of the equation.
-36 + -12N + 36 + N2 = 0 + 36

Reorder the terms:
-36 + 36 + -12N + N2 = 0 + 36

Combine like terms: -36 + 36 = 0
0 + -12N + N2 = 0 + 36
-12N + N2 = 0 + 36

Combine like terms: 0 + 36 = 36
-12N + N2 = 36

The N term is -12N.  Take half its coefficient (-6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
-12N + 36 + N2 = 36 + 36

Reorder the terms:
36 + -12N + N2 = 36 + 36

Combine like terms: 36 + 36 = 72
36 + -12N + N2 = 72

Factor a perfect square on the left side:
(N + -6)(N + -6) = 72

Calculate the square root of the right side: 8.485281374

Break this problem into two subproblems by setting 
(N + -6) equal to 8.485281374 and -8.485281374.

Subproblem 1

N + -6 = 8.485281374 Simplifying N + -6 = 8.485281374 Reorder the terms: -6 + N = 8.485281374 Solving -6 + N = 8.485281374 Solving for variable 'N'. Move all terms containing N to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + N = 8.485281374 + 6 Combine like terms: -6 + 6 = 0 0 + N = 8.485281374 + 6 N = 8.485281374 + 6 Combine like terms: 8.485281374 + 6 = 14.485281374 N = 14.485281374 Simplifying N = 14.485281374

Subproblem 2

N + -6 = -8.485281374 Simplifying N + -6 = -8.485281374 Reorder the terms: -6 + N = -8.485281374 Solving -6 + N = -8.485281374 Solving for variable 'N'. Move all terms containing N to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + N = -8.485281374 + 6 Combine like terms: -6 + 6 = 0 0 + N = -8.485281374 + 6 N = -8.485281374 + 6 Combine like terms: -8.485281374 + 6 = -2.485281374 N = -2.485281374 Simplifying N = -2.485281374

Solution

The solution to the problem is based on the solutions from the subproblems. N = {14.485281374, -2.485281374}

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