5p+28=88-p*p

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Solution for 5p+28=88-p*p equation:


Simplifying
5p + 28 = 88 + -1p * p

Reorder the terms:
28 + 5p = 88 + -1p * p

Multiply p * p
28 + 5p = 88 + -1p2

Solving
28 + 5p = 88 + -1p2

Solving for variable 'p'.

Reorder the terms:
28 + -88 + 5p + p2 = 88 + -1p2 + -88 + p2

Combine like terms: 28 + -88 = -60
-60 + 5p + p2 = 88 + -1p2 + -88 + p2

Reorder the terms:
-60 + 5p + p2 = 88 + -88 + -1p2 + p2

Combine like terms: 88 + -88 = 0
-60 + 5p + p2 = 0 + -1p2 + p2
-60 + 5p + p2 = -1p2 + p2

Combine like terms: -1p2 + p2 = 0
-60 + 5p + p2 = 0

Begin completing the square.

Move the constant term to the right:

Add '60' to each side of the equation.
-60 + 5p + 60 + p2 = 0 + 60

Reorder the terms:
-60 + 60 + 5p + p2 = 0 + 60

Combine like terms: -60 + 60 = 0
0 + 5p + p2 = 0 + 60
5p + p2 = 0 + 60

Combine like terms: 0 + 60 = 60
5p + p2 = 60

The p term is 5p.  Take half its coefficient (2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
5p + 6.25 + p2 = 60 + 6.25

Reorder the terms:
6.25 + 5p + p2 = 60 + 6.25

Combine like terms: 60 + 6.25 = 66.25
6.25 + 5p + p2 = 66.25

Factor a perfect square on the left side:
(p + 2.5)(p + 2.5) = 66.25

Calculate the square root of the right side: 8.139410298

Break this problem into two subproblems by setting 
(p + 2.5) equal to 8.139410298 and -8.139410298.

Subproblem 1

p + 2.5 = 8.139410298 Simplifying p + 2.5 = 8.139410298 Reorder the terms: 2.5 + p = 8.139410298 Solving 2.5 + p = 8.139410298 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + p = 8.139410298 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + p = 8.139410298 + -2.5 p = 8.139410298 + -2.5 Combine like terms: 8.139410298 + -2.5 = 5.639410298 p = 5.639410298 Simplifying p = 5.639410298

Subproblem 2

p + 2.5 = -8.139410298 Simplifying p + 2.5 = -8.139410298 Reorder the terms: 2.5 + p = -8.139410298 Solving 2.5 + p = -8.139410298 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + p = -8.139410298 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + p = -8.139410298 + -2.5 p = -8.139410298 + -2.5 Combine like terms: -8.139410298 + -2.5 = -10.639410298 p = -10.639410298 Simplifying p = -10.639410298

Solution

The solution to the problem is based on the solutions from the subproblems. p = {5.639410298, -10.639410298}

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