(p+2)(p+2)=p+20

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Solution for (p+2)(p+2)=p+20 equation:


Simplifying
(p + 2)(p + 2) = p + 20

Reorder the terms:
(2 + p)(p + 2) = p + 20

Reorder the terms:
(2 + p)(2 + p) = p + 20

Multiply (2 + p) * (2 + p)
(2(2 + p) + p(2 + p)) = p + 20
((2 * 2 + p * 2) + p(2 + p)) = p + 20
((4 + 2p) + p(2 + p)) = p + 20
(4 + 2p + (2 * p + p * p)) = p + 20
(4 + 2p + (2p + p2)) = p + 20

Combine like terms: 2p + 2p = 4p
(4 + 4p + p2) = p + 20

Reorder the terms:
4 + 4p + p2 = 20 + p

Solving
4 + 4p + p2 = 20 + p

Solving for variable 'p'.

Reorder the terms:
4 + -20 + 4p + -1p + p2 = 20 + p + -20 + -1p

Combine like terms: 4 + -20 = -16
-16 + 4p + -1p + p2 = 20 + p + -20 + -1p

Combine like terms: 4p + -1p = 3p
-16 + 3p + p2 = 20 + p + -20 + -1p

Reorder the terms:
-16 + 3p + p2 = 20 + -20 + p + -1p

Combine like terms: 20 + -20 = 0
-16 + 3p + p2 = 0 + p + -1p
-16 + 3p + p2 = p + -1p

Combine like terms: p + -1p = 0
-16 + 3p + p2 = 0

Begin completing the square.

Move the constant term to the right:

Add '16' to each side of the equation.
-16 + 3p + 16 + p2 = 0 + 16

Reorder the terms:
-16 + 16 + 3p + p2 = 0 + 16

Combine like terms: -16 + 16 = 0
0 + 3p + p2 = 0 + 16
3p + p2 = 0 + 16

Combine like terms: 0 + 16 = 16
3p + p2 = 16

The p term is 3p.  Take half its coefficient (1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
3p + 2.25 + p2 = 16 + 2.25

Reorder the terms:
2.25 + 3p + p2 = 16 + 2.25

Combine like terms: 16 + 2.25 = 18.25
2.25 + 3p + p2 = 18.25

Factor a perfect square on the left side:
(p + 1.5)(p + 1.5) = 18.25

Calculate the square root of the right side: 4.272001873

Break this problem into two subproblems by setting 
(p + 1.5) equal to 4.272001873 and -4.272001873.

Subproblem 1

p + 1.5 = 4.272001873 Simplifying p + 1.5 = 4.272001873 Reorder the terms: 1.5 + p = 4.272001873 Solving 1.5 + p = 4.272001873 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + p = 4.272001873 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + p = 4.272001873 + -1.5 p = 4.272001873 + -1.5 Combine like terms: 4.272001873 + -1.5 = 2.772001873 p = 2.772001873 Simplifying p = 2.772001873

Subproblem 2

p + 1.5 = -4.272001873 Simplifying p + 1.5 = -4.272001873 Reorder the terms: 1.5 + p = -4.272001873 Solving 1.5 + p = -4.272001873 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + p = -4.272001873 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + p = -4.272001873 + -1.5 p = -4.272001873 + -1.5 Combine like terms: -4.272001873 + -1.5 = -5.772001873 p = -5.772001873 Simplifying p = -5.772001873

Solution

The solution to the problem is based on the solutions from the subproblems. p = {2.772001873, -5.772001873}

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