0=p^2-9p-32

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Solution for 0=p^2-9p-32 equation:


Simplifying
0 = p2 + -9p + -32

Reorder the terms:
0 = -32 + -9p + p2

Solving
0 = -32 + -9p + p2

Solving for variable 'p'.

Combine like terms: 0 + 32 = 32
32 + 9p + -1p2 = -32 + -9p + p2 + 32 + 9p + -1p2

Reorder the terms:
32 + 9p + -1p2 = -32 + 32 + -9p + 9p + p2 + -1p2

Combine like terms: -32 + 32 = 0
32 + 9p + -1p2 = 0 + -9p + 9p + p2 + -1p2
32 + 9p + -1p2 = -9p + 9p + p2 + -1p2

Combine like terms: -9p + 9p = 0
32 + 9p + -1p2 = 0 + p2 + -1p2
32 + 9p + -1p2 = p2 + -1p2

Combine like terms: p2 + -1p2 = 0
32 + 9p + -1p2 = 0

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

Divide each side by '-1'.
-32 + -9p + p2 = 0

Move the constant term to the right:

Add '32' to each side of the equation.
-32 + -9p + 32 + p2 = 0 + 32

Reorder the terms:
-32 + 32 + -9p + p2 = 0 + 32

Combine like terms: -32 + 32 = 0
0 + -9p + p2 = 0 + 32
-9p + p2 = 0 + 32

Combine like terms: 0 + 32 = 32
-9p + p2 = 32

The p term is -9p.  Take half its coefficient (-4.5).
Square it (20.25) and add it to both sides.

Add '20.25' to each side of the equation.
-9p + 20.25 + p2 = 32 + 20.25

Reorder the terms:
20.25 + -9p + p2 = 32 + 20.25

Combine like terms: 32 + 20.25 = 52.25
20.25 + -9p + p2 = 52.25

Factor a perfect square on the left side:
(p + -4.5)(p + -4.5) = 52.25

Calculate the square root of the right side: 7.228416147

Break this problem into two subproblems by setting 
(p + -4.5) equal to 7.228416147 and -7.228416147.

Subproblem 1

p + -4.5 = 7.228416147 Simplifying p + -4.5 = 7.228416147 Reorder the terms: -4.5 + p = 7.228416147 Solving -4.5 + p = 7.228416147 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '4.5' to each side of the equation. -4.5 + 4.5 + p = 7.228416147 + 4.5 Combine like terms: -4.5 + 4.5 = 0.0 0.0 + p = 7.228416147 + 4.5 p = 7.228416147 + 4.5 Combine like terms: 7.228416147 + 4.5 = 11.728416147 p = 11.728416147 Simplifying p = 11.728416147

Subproblem 2

p + -4.5 = -7.228416147 Simplifying p + -4.5 = -7.228416147 Reorder the terms: -4.5 + p = -7.228416147 Solving -4.5 + p = -7.228416147 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '4.5' to each side of the equation. -4.5 + 4.5 + p = -7.228416147 + 4.5 Combine like terms: -4.5 + 4.5 = 0.0 0.0 + p = -7.228416147 + 4.5 p = -7.228416147 + 4.5 Combine like terms: -7.228416147 + 4.5 = -2.728416147 p = -2.728416147 Simplifying p = -2.728416147

Solution

The solution to the problem is based on the solutions from the subproblems. p = {11.728416147, -2.728416147}

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