2(p+6)p=11

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Solution for 2(p+6)p=11 equation:


Simplifying
2(p + 6) * p = 11

Reorder the terms:
2(6 + p) * p = 11

Reorder the terms for easier multiplication:
2p(6 + p) = 11
(6 * 2p + p * 2p) = 11
(12p + 2p2) = 11

Solving
12p + 2p2 = 11

Solving for variable 'p'.

Reorder the terms:
-11 + 12p + 2p2 = 11 + -11

Combine like terms: 11 + -11 = 0
-11 + 12p + 2p2 = 0

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

Divide each side by '2'.
-5.5 + 6p + p2 = 0

Move the constant term to the right:

Add '5.5' to each side of the equation.
-5.5 + 6p + 5.5 + p2 = 0 + 5.5

Reorder the terms:
-5.5 + 5.5 + 6p + p2 = 0 + 5.5

Combine like terms: -5.5 + 5.5 = 0.0
0.0 + 6p + p2 = 0 + 5.5
6p + p2 = 0 + 5.5

Combine like terms: 0 + 5.5 = 5.5
6p + p2 = 5.5

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 = 5.5 + 9

Reorder the terms:
9 + 6p + p2 = 5.5 + 9

Combine like terms: 5.5 + 9 = 14.5
9 + 6p + p2 = 14.5

Factor a perfect square on the left side:
(p + 3)(p + 3) = 14.5

Calculate the square root of the right side: 3.807886553

Break this problem into two subproblems by setting 
(p + 3) equal to 3.807886553 and -3.807886553.

Subproblem 1

p + 3 = 3.807886553 Simplifying p + 3 = 3.807886553 Reorder the terms: 3 + p = 3.807886553 Solving 3 + p = 3.807886553 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 = 3.807886553 + -3 Combine like terms: 3 + -3 = 0 0 + p = 3.807886553 + -3 p = 3.807886553 + -3 Combine like terms: 3.807886553 + -3 = 0.807886553 p = 0.807886553 Simplifying p = 0.807886553

Subproblem 2

p + 3 = -3.807886553 Simplifying p + 3 = -3.807886553 Reorder the terms: 3 + p = -3.807886553 Solving 3 + p = -3.807886553 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 = -3.807886553 + -3 Combine like terms: 3 + -3 = 0 0 + p = -3.807886553 + -3 p = -3.807886553 + -3 Combine like terms: -3.807886553 + -3 = -6.807886553 p = -6.807886553 Simplifying p = -6.807886553

Solution

The solution to the problem is based on the solutions from the subproblems. p = {0.807886553, -6.807886553}

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