9p+16=p^2

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Solution for 9p+16=p^2 equation:


Simplifying
9p + 16 = p2

Reorder the terms:
16 + 9p = p2

Solving
16 + 9p = p2

Solving for variable 'p'.

Combine like terms: p2 + -1p2 = 0
16 + 9p + -1p2 = 0

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

Divide each side by '-1'.
-16 + -9p + p2 = 0

Move the constant term to the right:

Add '16' to each side of the equation.
-16 + -9p + 16 + p2 = 0 + 16

Reorder the terms:
-16 + 16 + -9p + p2 = 0 + 16

Combine like terms: -16 + 16 = 0
0 + -9p + p2 = 0 + 16
-9p + p2 = 0 + 16

Combine like terms: 0 + 16 = 16
-9p + p2 = 16

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 = 16 + 20.25

Reorder the terms:
20.25 + -9p + p2 = 16 + 20.25

Combine like terms: 16 + 20.25 = 36.25
20.25 + -9p + p2 = 36.25

Factor a perfect square on the left side:
(p + -4.5)(p + -4.5) = 36.25

Calculate the square root of the right side: 6.020797289

Break this problem into two subproblems by setting 
(p + -4.5) equal to 6.020797289 and -6.020797289.

Subproblem 1

p + -4.5 = 6.020797289 Simplifying p + -4.5 = 6.020797289 Reorder the terms: -4.5 + p = 6.020797289 Solving -4.5 + p = 6.020797289 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 = 6.020797289 + 4.5 Combine like terms: -4.5 + 4.5 = 0.0 0.0 + p = 6.020797289 + 4.5 p = 6.020797289 + 4.5 Combine like terms: 6.020797289 + 4.5 = 10.520797289 p = 10.520797289 Simplifying p = 10.520797289

Subproblem 2

p + -4.5 = -6.020797289 Simplifying p + -4.5 = -6.020797289 Reorder the terms: -4.5 + p = -6.020797289 Solving -4.5 + p = -6.020797289 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 = -6.020797289 + 4.5 Combine like terms: -4.5 + 4.5 = 0.0 0.0 + p = -6.020797289 + 4.5 p = -6.020797289 + 4.5 Combine like terms: -6.020797289 + 4.5 = -1.520797289 p = -1.520797289 Simplifying p = -1.520797289

Solution

The solution to the problem is based on the solutions from the subproblems. p = {10.520797289, -1.520797289}

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