p^2+16p+18=4

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Solution for p^2+16p+18=4 equation:


Simplifying
p2 + 16p + 18 = 4

Reorder the terms:
18 + 16p + p2 = 4

Solving
18 + 16p + p2 = 4

Solving for variable 'p'.

Reorder the terms:
18 + -4 + 16p + p2 = 4 + -4

Combine like terms: 18 + -4 = 14
14 + 16p + p2 = 4 + -4

Combine like terms: 4 + -4 = 0
14 + 16p + p2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-14' to each side of the equation.
14 + 16p + -14 + p2 = 0 + -14

Reorder the terms:
14 + -14 + 16p + p2 = 0 + -14

Combine like terms: 14 + -14 = 0
0 + 16p + p2 = 0 + -14
16p + p2 = 0 + -14

Combine like terms: 0 + -14 = -14
16p + p2 = -14

The p term is 16p.  Take half its coefficient (8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
16p + 64 + p2 = -14 + 64

Reorder the terms:
64 + 16p + p2 = -14 + 64

Combine like terms: -14 + 64 = 50
64 + 16p + p2 = 50

Factor a perfect square on the left side:
(p + 8)(p + 8) = 50

Calculate the square root of the right side: 7.071067812

Break this problem into two subproblems by setting 
(p + 8) equal to 7.071067812 and -7.071067812.

Subproblem 1

p + 8 = 7.071067812 Simplifying p + 8 = 7.071067812 Reorder the terms: 8 + p = 7.071067812 Solving 8 + p = 7.071067812 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + p = 7.071067812 + -8 Combine like terms: 8 + -8 = 0 0 + p = 7.071067812 + -8 p = 7.071067812 + -8 Combine like terms: 7.071067812 + -8 = -0.928932188 p = -0.928932188 Simplifying p = -0.928932188

Subproblem 2

p + 8 = -7.071067812 Simplifying p + 8 = -7.071067812 Reorder the terms: 8 + p = -7.071067812 Solving 8 + p = -7.071067812 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + p = -7.071067812 + -8 Combine like terms: 8 + -8 = 0 0 + p = -7.071067812 + -8 p = -7.071067812 + -8 Combine like terms: -7.071067812 + -8 = -15.071067812 p = -15.071067812 Simplifying p = -15.071067812

Solution

The solution to the problem is based on the solutions from the subproblems. p = {-0.928932188, -15.071067812}

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