1=-5p^2+450p-40

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Solution for 1=-5p^2+450p-40 equation:


Simplifying
1 = -5p2 + 450p + -40

Reorder the terms:
1 = -40 + 450p + -5p2

Solving
1 = -40 + 450p + -5p2

Solving for variable 'p'.

Combine like terms: 1 + 40 = 41
41 + -450p + 5p2 = -40 + 450p + -5p2 + 40 + -450p + 5p2

Reorder the terms:
41 + -450p + 5p2 = -40 + 40 + 450p + -450p + -5p2 + 5p2

Combine like terms: -40 + 40 = 0
41 + -450p + 5p2 = 0 + 450p + -450p + -5p2 + 5p2
41 + -450p + 5p2 = 450p + -450p + -5p2 + 5p2

Combine like terms: 450p + -450p = 0
41 + -450p + 5p2 = 0 + -5p2 + 5p2
41 + -450p + 5p2 = -5p2 + 5p2

Combine like terms: -5p2 + 5p2 = 0
41 + -450p + 5p2 = 0

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

Divide each side by '5'.
8.2 + -90p + p2 = 0

Move the constant term to the right:

Add '-8.2' to each side of the equation.
8.2 + -90p + -8.2 + p2 = 0 + -8.2

Reorder the terms:
8.2 + -8.2 + -90p + p2 = 0 + -8.2

Combine like terms: 8.2 + -8.2 = 0.0
0.0 + -90p + p2 = 0 + -8.2
-90p + p2 = 0 + -8.2

Combine like terms: 0 + -8.2 = -8.2
-90p + p2 = -8.2

The p term is -90p.  Take half its coefficient (-45).
Square it (2025) and add it to both sides.

Add '2025' to each side of the equation.
-90p + 2025 + p2 = -8.2 + 2025

Reorder the terms:
2025 + -90p + p2 = -8.2 + 2025

Combine like terms: -8.2 + 2025 = 2016.8
2025 + -90p + p2 = 2016.8

Factor a perfect square on the left side:
(p + -45)(p + -45) = 2016.8

Calculate the square root of the right side: 44.908796466

Break this problem into two subproblems by setting 
(p + -45) equal to 44.908796466 and -44.908796466.

Subproblem 1

p + -45 = 44.908796466 Simplifying p + -45 = 44.908796466 Reorder the terms: -45 + p = 44.908796466 Solving -45 + p = 44.908796466 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '45' to each side of the equation. -45 + 45 + p = 44.908796466 + 45 Combine like terms: -45 + 45 = 0 0 + p = 44.908796466 + 45 p = 44.908796466 + 45 Combine like terms: 44.908796466 + 45 = 89.908796466 p = 89.908796466 Simplifying p = 89.908796466

Subproblem 2

p + -45 = -44.908796466 Simplifying p + -45 = -44.908796466 Reorder the terms: -45 + p = -44.908796466 Solving -45 + p = -44.908796466 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '45' to each side of the equation. -45 + 45 + p = -44.908796466 + 45 Combine like terms: -45 + 45 = 0 0 + p = -44.908796466 + 45 p = -44.908796466 + 45 Combine like terms: -44.908796466 + 45 = 0.091203534 p = 0.091203534 Simplifying p = 0.091203534

Solution

The solution to the problem is based on the solutions from the subproblems. p = {89.908796466, 0.091203534}

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