500+p-3p^2=0

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Solution for 500+p-3p^2=0 equation:


Simplifying
500 + p + -3p2 = 0

Solving
500 + p + -3p2 = 0

Solving for variable 'p'.

Begin completing the square.  Divide all terms by
-3 the coefficient of the squared term: 

Divide each side by '-3'.
-166.6666667 + -0.3333333333p + p2 = 0

Move the constant term to the right:

Add '166.6666667' to each side of the equation.
-166.6666667 + -0.3333333333p + 166.6666667 + p2 = 0 + 166.6666667

Reorder the terms:
-166.6666667 + 166.6666667 + -0.3333333333p + p2 = 0 + 166.6666667

Combine like terms: -166.6666667 + 166.6666667 = 0.0000000
0.0000000 + -0.3333333333p + p2 = 0 + 166.6666667
-0.3333333333p + p2 = 0 + 166.6666667

Combine like terms: 0 + 166.6666667 = 166.6666667
-0.3333333333p + p2 = 166.6666667

The p term is p.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-0.3333333333p + 0.25 + p2 = 166.6666667 + 0.25

Reorder the terms:
0.25 + -0.3333333333p + p2 = 166.6666667 + 0.25

Combine like terms: 166.6666667 + 0.25 = 166.9166667
0.25 + -0.3333333333p + p2 = 166.9166667

Factor a perfect square on the left side:
(p + 0.5)(p + 0.5) = 166.9166667

Calculate the square root of the right side: 12.919623319

Break this problem into two subproblems by setting 
(p + 0.5) equal to 12.919623319 and -12.919623319.

Subproblem 1

p + 0.5 = 12.919623319 Simplifying p + 0.5 = 12.919623319 Reorder the terms: 0.5 + p = 12.919623319 Solving 0.5 + p = 12.919623319 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + p = 12.919623319 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + p = 12.919623319 + -0.5 p = 12.919623319 + -0.5 Combine like terms: 12.919623319 + -0.5 = 12.419623319 p = 12.419623319 Simplifying p = 12.419623319

Subproblem 2

p + 0.5 = -12.919623319 Simplifying p + 0.5 = -12.919623319 Reorder the terms: 0.5 + p = -12.919623319 Solving 0.5 + p = -12.919623319 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + p = -12.919623319 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + p = -12.919623319 + -0.5 p = -12.919623319 + -0.5 Combine like terms: -12.919623319 + -0.5 = -13.419623319 p = -13.419623319 Simplifying p = -13.419623319

Solution

The solution to the problem is based on the solutions from the subproblems. p = {12.419623319, -13.419623319}

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