=p^2+10p-225

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Solution for =p^2+10p-225 equation:


Simplifying
0 = p2 + 10p + -225

Reorder the terms:
0 = -225 + 10p + p2

Solving
0 = -225 + 10p + p2

Solving for variable 'p'.

Combine like terms: 0 + 225 = 225
225 + -10p + -1p2 = -225 + 10p + p2 + 225 + -10p + -1p2

Reorder the terms:
225 + -10p + -1p2 = -225 + 225 + 10p + -10p + p2 + -1p2

Combine like terms: -225 + 225 = 0
225 + -10p + -1p2 = 0 + 10p + -10p + p2 + -1p2
225 + -10p + -1p2 = 10p + -10p + p2 + -1p2

Combine like terms: 10p + -10p = 0
225 + -10p + -1p2 = 0 + p2 + -1p2
225 + -10p + -1p2 = p2 + -1p2

Combine like terms: p2 + -1p2 = 0
225 + -10p + -1p2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-225 + 10p + p2 = 0

Move the constant term to the right:

Add '225' to each side of the equation.
-225 + 10p + 225 + p2 = 0 + 225

Reorder the terms:
-225 + 225 + 10p + p2 = 0 + 225

Combine like terms: -225 + 225 = 0
0 + 10p + p2 = 0 + 225
10p + p2 = 0 + 225

Combine like terms: 0 + 225 = 225
10p + p2 = 225

The p term is 10p.  Take half its coefficient (5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
10p + 25 + p2 = 225 + 25

Reorder the terms:
25 + 10p + p2 = 225 + 25

Combine like terms: 225 + 25 = 250
25 + 10p + p2 = 250

Factor a perfect square on the left side:
(p + 5)(p + 5) = 250

Calculate the square root of the right side: 15.811388301

Break this problem into two subproblems by setting 
(p + 5) equal to 15.811388301 and -15.811388301.

Subproblem 1

p + 5 = 15.811388301 Simplifying p + 5 = 15.811388301 Reorder the terms: 5 + p = 15.811388301 Solving 5 + p = 15.811388301 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + p = 15.811388301 + -5 Combine like terms: 5 + -5 = 0 0 + p = 15.811388301 + -5 p = 15.811388301 + -5 Combine like terms: 15.811388301 + -5 = 10.811388301 p = 10.811388301 Simplifying p = 10.811388301

Subproblem 2

p + 5 = -15.811388301 Simplifying p + 5 = -15.811388301 Reorder the terms: 5 + p = -15.811388301 Solving 5 + p = -15.811388301 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + p = -15.811388301 + -5 Combine like terms: 5 + -5 = 0 0 + p = -15.811388301 + -5 p = -15.811388301 + -5 Combine like terms: -15.811388301 + -5 = -20.811388301 p = -20.811388301 Simplifying p = -20.811388301

Solution

The solution to the problem is based on the solutions from the subproblems. p = {10.811388301, -20.811388301}

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