p^2-6p-5=-8

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Solution for p^2-6p-5=-8 equation:


Simplifying
p2 + -6p + -5 = -8

Reorder the terms:
-5 + -6p + p2 = -8

Solving
-5 + -6p + p2 = -8

Solving for variable 'p'.

Reorder the terms:
-5 + 8 + -6p + p2 = -8 + 8

Combine like terms: -5 + 8 = 3
3 + -6p + p2 = -8 + 8

Combine like terms: -8 + 8 = 0
3 + -6p + p2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-3' to each side of the equation.
3 + -6p + -3 + p2 = 0 + -3

Reorder the terms:
3 + -3 + -6p + p2 = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -6p + p2 = 0 + -3
-6p + p2 = 0 + -3

Combine like terms: 0 + -3 = -3
-6p + p2 = -3

The p term is -6p.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6p + 9 + p2 = -3 + 9

Reorder the terms:
9 + -6p + p2 = -3 + 9

Combine like terms: -3 + 9 = 6
9 + -6p + p2 = 6

Factor a perfect square on the left side:
(p + -3)(p + -3) = 6

Calculate the square root of the right side: 2.449489743

Break this problem into two subproblems by setting 
(p + -3) equal to 2.449489743 and -2.449489743.

Subproblem 1

p + -3 = 2.449489743 Simplifying p + -3 = 2.449489743 Reorder the terms: -3 + p = 2.449489743 Solving -3 + p = 2.449489743 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + p = 2.449489743 + 3 Combine like terms: -3 + 3 = 0 0 + p = 2.449489743 + 3 p = 2.449489743 + 3 Combine like terms: 2.449489743 + 3 = 5.449489743 p = 5.449489743 Simplifying p = 5.449489743

Subproblem 2

p + -3 = -2.449489743 Simplifying p + -3 = -2.449489743 Reorder the terms: -3 + p = -2.449489743 Solving -3 + p = -2.449489743 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + p = -2.449489743 + 3 Combine like terms: -3 + 3 = 0 0 + p = -2.449489743 + 3 p = -2.449489743 + 3 Combine like terms: -2.449489743 + 3 = 0.550510257 p = 0.550510257 Simplifying p = 0.550510257

Solution

The solution to the problem is based on the solutions from the subproblems. p = {5.449489743, 0.550510257}

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