p^2+4p+4=40

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Solution for p^2+4p+4=40 equation:


Simplifying
p2 + 4p + 4 = 40

Reorder the terms:
4 + 4p + p2 = 40

Solving
4 + 4p + p2 = 40

Solving for variable 'p'.

Reorder the terms:
4 + -40 + 4p + p2 = 40 + -40

Combine like terms: 4 + -40 = -36
-36 + 4p + p2 = 40 + -40

Combine like terms: 40 + -40 = 0
-36 + 4p + p2 = 0

Begin completing the square.

Move the constant term to the right:

Add '36' to each side of the equation.
-36 + 4p + 36 + p2 = 0 + 36

Reorder the terms:
-36 + 36 + 4p + p2 = 0 + 36

Combine like terms: -36 + 36 = 0
0 + 4p + p2 = 0 + 36
4p + p2 = 0 + 36

Combine like terms: 0 + 36 = 36
4p + p2 = 36

The p term is 4p.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4p + 4 + p2 = 36 + 4

Reorder the terms:
4 + 4p + p2 = 36 + 4

Combine like terms: 36 + 4 = 40
4 + 4p + p2 = 40

Factor a perfect square on the left side:
(p + 2)(p + 2) = 40

Calculate the square root of the right side: 6.32455532

Break this problem into two subproblems by setting 
(p + 2) equal to 6.32455532 and -6.32455532.

Subproblem 1

p + 2 = 6.32455532 Simplifying p + 2 = 6.32455532 Reorder the terms: 2 + p = 6.32455532 Solving 2 + p = 6.32455532 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + p = 6.32455532 + -2 Combine like terms: 2 + -2 = 0 0 + p = 6.32455532 + -2 p = 6.32455532 + -2 Combine like terms: 6.32455532 + -2 = 4.32455532 p = 4.32455532 Simplifying p = 4.32455532

Subproblem 2

p + 2 = -6.32455532 Simplifying p + 2 = -6.32455532 Reorder the terms: 2 + p = -6.32455532 Solving 2 + p = -6.32455532 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + p = -6.32455532 + -2 Combine like terms: 2 + -2 = 0 0 + p = -6.32455532 + -2 p = -6.32455532 + -2 Combine like terms: -6.32455532 + -2 = -8.32455532 p = -8.32455532 Simplifying p = -8.32455532

Solution

The solution to the problem is based on the solutions from the subproblems. p = {4.32455532, -8.32455532}

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