15(p)=2000-4p-p^2

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Solution for 15(p)=2000-4p-p^2 equation:


Simplifying
15(p) = 2000 + -4p + -1p2

Solving
15p = 2000 + -4p + -1p2

Solving for variable 'p'.

Reorder the terms:
-2000 + 15p + 4p + p2 = 2000 + -4p + -1p2 + -2000 + 4p + p2

Combine like terms: 15p + 4p = 19p
-2000 + 19p + p2 = 2000 + -4p + -1p2 + -2000 + 4p + p2

Reorder the terms:
-2000 + 19p + p2 = 2000 + -2000 + -4p + 4p + -1p2 + p2

Combine like terms: 2000 + -2000 = 0
-2000 + 19p + p2 = 0 + -4p + 4p + -1p2 + p2
-2000 + 19p + p2 = -4p + 4p + -1p2 + p2

Combine like terms: -4p + 4p = 0
-2000 + 19p + p2 = 0 + -1p2 + p2
-2000 + 19p + p2 = -1p2 + p2

Combine like terms: -1p2 + p2 = 0
-2000 + 19p + p2 = 0

Begin completing the square.

Move the constant term to the right:

Add '2000' to each side of the equation.
-2000 + 19p + 2000 + p2 = 0 + 2000

Reorder the terms:
-2000 + 2000 + 19p + p2 = 0 + 2000

Combine like terms: -2000 + 2000 = 0
0 + 19p + p2 = 0 + 2000
19p + p2 = 0 + 2000

Combine like terms: 0 + 2000 = 2000
19p + p2 = 2000

The p term is 19p.  Take half its coefficient (9.5).
Square it (90.25) and add it to both sides.

Add '90.25' to each side of the equation.
19p + 90.25 + p2 = 2000 + 90.25

Reorder the terms:
90.25 + 19p + p2 = 2000 + 90.25

Combine like terms: 2000 + 90.25 = 2090.25
90.25 + 19p + p2 = 2090.25

Factor a perfect square on the left side:
(p + 9.5)(p + 9.5) = 2090.25

Calculate the square root of the right side: 45.719251962

Break this problem into two subproblems by setting 
(p + 9.5) equal to 45.719251962 and -45.719251962.

Subproblem 1

p + 9.5 = 45.719251962 Simplifying p + 9.5 = 45.719251962 Reorder the terms: 9.5 + p = 45.719251962 Solving 9.5 + p = 45.719251962 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-9.5' to each side of the equation. 9.5 + -9.5 + p = 45.719251962 + -9.5 Combine like terms: 9.5 + -9.5 = 0.0 0.0 + p = 45.719251962 + -9.5 p = 45.719251962 + -9.5 Combine like terms: 45.719251962 + -9.5 = 36.219251962 p = 36.219251962 Simplifying p = 36.219251962

Subproblem 2

p + 9.5 = -45.719251962 Simplifying p + 9.5 = -45.719251962 Reorder the terms: 9.5 + p = -45.719251962 Solving 9.5 + p = -45.719251962 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-9.5' to each side of the equation. 9.5 + -9.5 + p = -45.719251962 + -9.5 Combine like terms: 9.5 + -9.5 = 0.0 0.0 + p = -45.719251962 + -9.5 p = -45.719251962 + -9.5 Combine like terms: -45.719251962 + -9.5 = -55.219251962 p = -55.219251962 Simplifying p = -55.219251962

Solution

The solution to the problem is based on the solutions from the subproblems. p = {36.219251962, -55.219251962}

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