2p^2-12p-16=0

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Solution for 2p^2-12p-16=0 equation: 


Simplifying
2p2 + -12p + -16 = 0

Reorder the terms:
-16 + -12p + 2p2 = 0

Solving
-16 + -12p + 2p2 = 0

Solving for variable 'p'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-8 + -6p + p2) = 0

Ignore the factor 2.

Subproblem 1
Set the factor '(-8 + -6p + p2)' equal to zero and attempt to solve:

Simplifying
-8 + -6p + p2 = 0

Solving
-8 + -6p + p2 = 0

Begin completing the square.

Move the constant term to the right:

Add '8' to each side of the equation.
-8 + -6p + 8 + p2 = 0 + 8

Reorder the terms:
-8 + 8 + -6p + p2 = 0 + 8

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

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

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 = 8 + 9

Reorder the terms:
9 + -6p + p2 = 8 + 9

Combine like terms: 8 + 9 = 17
9 + -6p + p2 = 17

Factor a perfect square on the left side:
(p + -3)(p + -3) = 17

Calculate the square root of the right side: 4.123105626

Break this problem into two subproblems by setting 
(p + -3) equal to 4.123105626 and -4.123105626.


Subproblem 1
p + -3 = 4.123105626

Simplifying
p + -3 = 4.123105626

Reorder the terms:
-3 + p = 4.123105626

Solving
-3 + p = 4.123105626

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 = 4.123105626 + 3

Combine like terms: -3 + 3 = 0
0 + p = 4.123105626 + 3
p = 4.123105626 + 3

Combine like terms: 4.123105626 + 3 = 7.123105626
p = 7.123105626

Simplifying
p = 7.123105626


Subproblem 2
p + -3 = -4.123105626

Simplifying
p + -3 = -4.123105626

Reorder the terms:
-3 + p = -4.123105626

Solving
-3 + p = -4.123105626

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 = -4.123105626 + 3

Combine like terms: -3 + 3 = 0
0 + p = -4.123105626 + 3
p = -4.123105626 + 3

Combine like terms: -4.123105626 + 3 = -1.123105626
p = -1.123105626

Simplifying
p = -1.123105626


Solution
The solution to the problem is based on the solutions
from the subproblems.
p = {7.123105626, -1.123105626}
Solution
p = {7.123105626, -1.123105626}

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