0=p^2-8p-14

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Solution for 0=p^2-8p-14 equation:


Simplifying
0 = p2 + -8p + -14

Reorder the terms:
0 = -14 + -8p + p2

Solving
0 = -14 + -8p + p2

Solving for variable 'p'.

Combine like terms: 0 + 14 = 14
14 + 8p + -1p2 = -14 + -8p + p2 + 14 + 8p + -1p2

Reorder the terms:
14 + 8p + -1p2 = -14 + 14 + -8p + 8p + p2 + -1p2

Combine like terms: -14 + 14 = 0
14 + 8p + -1p2 = 0 + -8p + 8p + p2 + -1p2
14 + 8p + -1p2 = -8p + 8p + p2 + -1p2

Combine like terms: -8p + 8p = 0
14 + 8p + -1p2 = 0 + p2 + -1p2
14 + 8p + -1p2 = p2 + -1p2

Combine like terms: p2 + -1p2 = 0
14 + 8p + -1p2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-14 + -8p + p2 = 0

Move the constant term to the right:

Add '14' to each side of the equation.
-14 + -8p + 14 + p2 = 0 + 14

Reorder the terms:
-14 + 14 + -8p + p2 = 0 + 14

Combine like terms: -14 + 14 = 0
0 + -8p + p2 = 0 + 14
-8p + p2 = 0 + 14

Combine like terms: 0 + 14 = 14
-8p + p2 = 14

The p term is -8p.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8p + 16 + p2 = 14 + 16

Reorder the terms:
16 + -8p + p2 = 14 + 16

Combine like terms: 14 + 16 = 30
16 + -8p + p2 = 30

Factor a perfect square on the left side:
(p + -4)(p + -4) = 30

Calculate the square root of the right side: 5.477225575

Break this problem into two subproblems by setting 
(p + -4) equal to 5.477225575 and -5.477225575.

Subproblem 1

p + -4 = 5.477225575 Simplifying p + -4 = 5.477225575 Reorder the terms: -4 + p = 5.477225575 Solving -4 + p = 5.477225575 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + p = 5.477225575 + 4 Combine like terms: -4 + 4 = 0 0 + p = 5.477225575 + 4 p = 5.477225575 + 4 Combine like terms: 5.477225575 + 4 = 9.477225575 p = 9.477225575 Simplifying p = 9.477225575

Subproblem 2

p + -4 = -5.477225575 Simplifying p + -4 = -5.477225575 Reorder the terms: -4 + p = -5.477225575 Solving -4 + p = -5.477225575 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + p = -5.477225575 + 4 Combine like terms: -4 + 4 = 0 0 + p = -5.477225575 + 4 p = -5.477225575 + 4 Combine like terms: -5.477225575 + 4 = -1.477225575 p = -1.477225575 Simplifying p = -1.477225575

Solution

The solution to the problem is based on the solutions from the subproblems. p = {9.477225575, -1.477225575}

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