12.5p-(2+p)p=2.5

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Solution for 12.5p-(2+p)p=2.5 equation:


Simplifying
12.5p + -1(2 + p) * p = 2.5

Reorder the terms for easier multiplication:
12.5p + -1p(2 + p) = 2.5
12.5p + (2 * -1p + p * -1p) = 2.5
12.5p + (-2p + -1p2) = 2.5

Combine like terms: 12.5p + -2p = 10.5p
10.5p + -1p2 = 2.5

Solving
10.5p + -1p2 = 2.5

Solving for variable 'p'.

Reorder the terms:
-2.5 + 10.5p + -1p2 = 2.5 + -2.5

Combine like terms: 2.5 + -2.5 = 0.0
-2.5 + 10.5p + -1p2 = 0.0

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

Divide each side by '-1'.
2.5 + -10.5p + p2 = 0.0

Move the constant term to the right:

Add '-2.5' to each side of the equation.
2.5 + -10.5p + -2.5 + p2 = 0.0 + -2.5

Reorder the terms:
2.5 + -2.5 + -10.5p + p2 = 0.0 + -2.5

Combine like terms: 2.5 + -2.5 = 0.0
0.0 + -10.5p + p2 = 0.0 + -2.5
-10.5p + p2 = 0.0 + -2.5

Combine like terms: 0.0 + -2.5 = -2.5
-10.5p + p2 = -2.5

The p term is -10.5p.  Take half its coefficient (-5.25).
Square it (27.5625) and add it to both sides.

Add '27.5625' to each side of the equation.
-10.5p + 27.5625 + p2 = -2.5 + 27.5625

Reorder the terms:
27.5625 + -10.5p + p2 = -2.5 + 27.5625

Combine like terms: -2.5 + 27.5625 = 25.0625
27.5625 + -10.5p + p2 = 25.0625

Factor a perfect square on the left side:
(p + -5.25)(p + -5.25) = 25.0625

Calculate the square root of the right side: 5.006246099

Break this problem into two subproblems by setting 
(p + -5.25) equal to 5.006246099 and -5.006246099.

Subproblem 1

p + -5.25 = 5.006246099 Simplifying p + -5.25 = 5.006246099 Reorder the terms: -5.25 + p = 5.006246099 Solving -5.25 + p = 5.006246099 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '5.25' to each side of the equation. -5.25 + 5.25 + p = 5.006246099 + 5.25 Combine like terms: -5.25 + 5.25 = 0.00 0.00 + p = 5.006246099 + 5.25 p = 5.006246099 + 5.25 Combine like terms: 5.006246099 + 5.25 = 10.256246099 p = 10.256246099 Simplifying p = 10.256246099

Subproblem 2

p + -5.25 = -5.006246099 Simplifying p + -5.25 = -5.006246099 Reorder the terms: -5.25 + p = -5.006246099 Solving -5.25 + p = -5.006246099 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '5.25' to each side of the equation. -5.25 + 5.25 + p = -5.006246099 + 5.25 Combine like terms: -5.25 + 5.25 = 0.00 0.00 + p = -5.006246099 + 5.25 p = -5.006246099 + 5.25 Combine like terms: -5.006246099 + 5.25 = 0.243753901 p = 0.243753901 Simplifying p = 0.243753901

Solution

The solution to the problem is based on the solutions from the subproblems. p = {10.256246099, 0.243753901}

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