n^2-9n-552=0

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Solution for n^2-9n-552=0 equation:


Simplifying
n2 + -9n + -552 = 0

Reorder the terms:
-552 + -9n + n2 = 0

Solving
-552 + -9n + n2 = 0

Solving for variable 'n'.

Begin completing the square.

Move the constant term to the right:

Add '552' to each side of the equation.
-552 + -9n + 552 + n2 = 0 + 552

Reorder the terms:
-552 + 552 + -9n + n2 = 0 + 552

Combine like terms: -552 + 552 = 0
0 + -9n + n2 = 0 + 552
-9n + n2 = 0 + 552

Combine like terms: 0 + 552 = 552
-9n + n2 = 552

The n term is -9n.  Take half its coefficient (-4.5).
Square it (20.25) and add it to both sides.

Add '20.25' to each side of the equation.
-9n + 20.25 + n2 = 552 + 20.25

Reorder the terms:
20.25 + -9n + n2 = 552 + 20.25

Combine like terms: 552 + 20.25 = 572.25
20.25 + -9n + n2 = 572.25

Factor a perfect square on the left side:
(n + -4.5)(n + -4.5) = 572.25

Calculate the square root of the right side: 23.921747428

Break this problem into two subproblems by setting 
(n + -4.5) equal to 23.921747428 and -23.921747428.

Subproblem 1

n + -4.5 = 23.921747428 Simplifying n + -4.5 = 23.921747428 Reorder the terms: -4.5 + n = 23.921747428 Solving -4.5 + n = 23.921747428 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '4.5' to each side of the equation. -4.5 + 4.5 + n = 23.921747428 + 4.5 Combine like terms: -4.5 + 4.5 = 0.0 0.0 + n = 23.921747428 + 4.5 n = 23.921747428 + 4.5 Combine like terms: 23.921747428 + 4.5 = 28.421747428 n = 28.421747428 Simplifying n = 28.421747428

Subproblem 2

n + -4.5 = -23.921747428 Simplifying n + -4.5 = -23.921747428 Reorder the terms: -4.5 + n = -23.921747428 Solving -4.5 + n = -23.921747428 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '4.5' to each side of the equation. -4.5 + 4.5 + n = -23.921747428 + 4.5 Combine like terms: -4.5 + 4.5 = 0.0 0.0 + n = -23.921747428 + 4.5 n = -23.921747428 + 4.5 Combine like terms: -23.921747428 + 4.5 = -19.421747428 n = -19.421747428 Simplifying n = -19.421747428

Solution

The solution to the problem is based on the solutions from the subproblems. n = {28.421747428, -19.421747428}

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