p^2+6p-18=0

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Solution for p^2+6p-18=0 equation:


Simplifying
p2 + 6p + -18 = 0

Reorder the terms:
-18 + 6p + p2 = 0

Solving
-18 + 6p + p2 = 0

Solving for variable 'p'.

Begin completing the square.

Move the constant term to the right:

Add '18' to each side of the equation.
-18 + 6p + 18 + p2 = 0 + 18

Reorder the terms:
-18 + 18 + 6p + p2 = 0 + 18

Combine like terms: -18 + 18 = 0
0 + 6p + p2 = 0 + 18
6p + p2 = 0 + 18

Combine like terms: 0 + 18 = 18
6p + p2 = 18

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 = 18 + 9

Reorder the terms:
9 + 6p + p2 = 18 + 9

Combine like terms: 18 + 9 = 27
9 + 6p + p2 = 27

Factor a perfect square on the left side:
(p + 3)(p + 3) = 27

Calculate the square root of the right side: 5.196152423

Break this problem into two subproblems by setting 
(p + 3) equal to 5.196152423 and -5.196152423.

Subproblem 1

p + 3 = 5.196152423 Simplifying p + 3 = 5.196152423 Reorder the terms: 3 + p = 5.196152423 Solving 3 + p = 5.196152423 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 = 5.196152423 + -3 Combine like terms: 3 + -3 = 0 0 + p = 5.196152423 + -3 p = 5.196152423 + -3 Combine like terms: 5.196152423 + -3 = 2.196152423 p = 2.196152423 Simplifying p = 2.196152423

Subproblem 2

p + 3 = -5.196152423 Simplifying p + 3 = -5.196152423 Reorder the terms: 3 + p = -5.196152423 Solving 3 + p = -5.196152423 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 = -5.196152423 + -3 Combine like terms: 3 + -3 = 0 0 + p = -5.196152423 + -3 p = -5.196152423 + -3 Combine like terms: -5.196152423 + -3 = -8.196152423 p = -8.196152423 Simplifying p = -8.196152423

Solution

The solution to the problem is based on the solutions from the subproblems. p = {2.196152423, -8.196152423}

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