p^2-4p-108=0

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Solution for p^2-4p-108=0 equation:


Simplifying
p2 + -4p + -108 = 0

Reorder the terms:
-108 + -4p + p2 = 0

Solving
-108 + -4p + p2 = 0

Solving for variable 'p'.

Begin completing the square.

Move the constant term to the right:

Add '108' to each side of the equation.
-108 + -4p + 108 + p2 = 0 + 108

Reorder the terms:
-108 + 108 + -4p + p2 = 0 + 108

Combine like terms: -108 + 108 = 0
0 + -4p + p2 = 0 + 108
-4p + p2 = 0 + 108

Combine like terms: 0 + 108 = 108
-4p + p2 = 108

The p term is -4p.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4p + 4 + p2 = 108 + 4

Reorder the terms:
4 + -4p + p2 = 108 + 4

Combine like terms: 108 + 4 = 112
4 + -4p + p2 = 112

Factor a perfect square on the left side:
(p + -2)(p + -2) = 112

Calculate the square root of the right side: 10.583005244

Break this problem into two subproblems by setting 
(p + -2) equal to 10.583005244 and -10.583005244.

Subproblem 1

p + -2 = 10.583005244 Simplifying p + -2 = 10.583005244 Reorder the terms: -2 + p = 10.583005244 Solving -2 + p = 10.583005244 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + p = 10.583005244 + 2 Combine like terms: -2 + 2 = 0 0 + p = 10.583005244 + 2 p = 10.583005244 + 2 Combine like terms: 10.583005244 + 2 = 12.583005244 p = 12.583005244 Simplifying p = 12.583005244

Subproblem 2

p + -2 = -10.583005244 Simplifying p + -2 = -10.583005244 Reorder the terms: -2 + p = -10.583005244 Solving -2 + p = -10.583005244 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + p = -10.583005244 + 2 Combine like terms: -2 + 2 = 0 0 + p = -10.583005244 + 2 p = -10.583005244 + 2 Combine like terms: -10.583005244 + 2 = -8.583005244 p = -8.583005244 Simplifying p = -8.583005244

Solution

The solution to the problem is based on the solutions from the subproblems. p = {12.583005244, -8.583005244}

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