n^2-15n-2000=0

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Solution for n^2-15n-2000=0 equation:


Simplifying
n2 + -15n + -2000 = 0

Reorder the terms:
-2000 + -15n + n2 = 0

Solving
-2000 + -15n + n2 = 0

Solving for variable 'n'.

Begin completing the square.

Move the constant term to the right:

Add '2000' to each side of the equation.
-2000 + -15n + 2000 + n2 = 0 + 2000

Reorder the terms:
-2000 + 2000 + -15n + n2 = 0 + 2000

Combine like terms: -2000 + 2000 = 0
0 + -15n + n2 = 0 + 2000
-15n + n2 = 0 + 2000

Combine like terms: 0 + 2000 = 2000
-15n + n2 = 2000

The n term is -15n.  Take half its coefficient (-7.5).
Square it (56.25) and add it to both sides.

Add '56.25' to each side of the equation.
-15n + 56.25 + n2 = 2000 + 56.25

Reorder the terms:
56.25 + -15n + n2 = 2000 + 56.25

Combine like terms: 2000 + 56.25 = 2056.25
56.25 + -15n + n2 = 2056.25

Factor a perfect square on the left side:
(n + -7.5)(n + -7.5) = 2056.25

Calculate the square root of the right side: 45.345892868

Break this problem into two subproblems by setting 
(n + -7.5) equal to 45.345892868 and -45.345892868.

Subproblem 1

n + -7.5 = 45.345892868 Simplifying n + -7.5 = 45.345892868 Reorder the terms: -7.5 + n = 45.345892868 Solving -7.5 + n = 45.345892868 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '7.5' to each side of the equation. -7.5 + 7.5 + n = 45.345892868 + 7.5 Combine like terms: -7.5 + 7.5 = 0.0 0.0 + n = 45.345892868 + 7.5 n = 45.345892868 + 7.5 Combine like terms: 45.345892868 + 7.5 = 52.845892868 n = 52.845892868 Simplifying n = 52.845892868

Subproblem 2

n + -7.5 = -45.345892868 Simplifying n + -7.5 = -45.345892868 Reorder the terms: -7.5 + n = -45.345892868 Solving -7.5 + n = -45.345892868 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '7.5' to each side of the equation. -7.5 + 7.5 + n = -45.345892868 + 7.5 Combine like terms: -7.5 + 7.5 = 0.0 0.0 + n = -45.345892868 + 7.5 n = -45.345892868 + 7.5 Combine like terms: -45.345892868 + 7.5 = -37.845892868 n = -37.845892868 Simplifying n = -37.845892868

Solution

The solution to the problem is based on the solutions from the subproblems. n = {52.845892868, -37.845892868}

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