3p*3p-5p-28=0

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Solution for 3p*3p-5p-28=0 equation:


Simplifying
3p * 3p + -5p + -28 = 0

Reorder the terms for easier multiplication:
3 * 3p * p + -5p + -28 = 0

Multiply 3 * 3
9p * p + -5p + -28 = 0

Multiply p * p
9p2 + -5p + -28 = 0

Reorder the terms:
-28 + -5p + 9p2 = 0

Solving
-28 + -5p + 9p2 = 0

Solving for variable 'p'.

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

Divide each side by '9'.
-3.111111111 + -0.5555555556p + p2 = 0

Move the constant term to the right:

Add '3.111111111' to each side of the equation.
-3.111111111 + -0.5555555556p + 3.111111111 + p2 = 0 + 3.111111111

Reorder the terms:
-3.111111111 + 3.111111111 + -0.5555555556p + p2 = 0 + 3.111111111

Combine like terms: -3.111111111 + 3.111111111 = 0.000000000
0.000000000 + -0.5555555556p + p2 = 0 + 3.111111111
-0.5555555556p + p2 = 0 + 3.111111111

Combine like terms: 0 + 3.111111111 = 3.111111111
-0.5555555556p + p2 = 3.111111111

The p term is -0.5555555556p.  Take half its coefficient (-0.2777777778).
Square it (0.07716049384) and add it to both sides.

Add '0.07716049384' to each side of the equation.
-0.5555555556p + 0.07716049384 + p2 = 3.111111111 + 0.07716049384

Reorder the terms:
0.07716049384 + -0.5555555556p + p2 = 3.111111111 + 0.07716049384

Combine like terms: 3.111111111 + 0.07716049384 = 3.18827160484
0.07716049384 + -0.5555555556p + p2 = 3.18827160484

Factor a perfect square on the left side:
(p + -0.2777777778)(p + -0.2777777778) = 3.18827160484

Calculate the square root of the right side: 1.785573187

Break this problem into two subproblems by setting 
(p + -0.2777777778) equal to 1.785573187 and -1.785573187.

Subproblem 1

p + -0.2777777778 = 1.785573187 Simplifying p + -0.2777777778 = 1.785573187 Reorder the terms: -0.2777777778 + p = 1.785573187 Solving -0.2777777778 + p = 1.785573187 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '0.2777777778' to each side of the equation. -0.2777777778 + 0.2777777778 + p = 1.785573187 + 0.2777777778 Combine like terms: -0.2777777778 + 0.2777777778 = 0.0000000000 0.0000000000 + p = 1.785573187 + 0.2777777778 p = 1.785573187 + 0.2777777778 Combine like terms: 1.785573187 + 0.2777777778 = 2.0633509648 p = 2.0633509648 Simplifying p = 2.0633509648

Subproblem 2

p + -0.2777777778 = -1.785573187 Simplifying p + -0.2777777778 = -1.785573187 Reorder the terms: -0.2777777778 + p = -1.785573187 Solving -0.2777777778 + p = -1.785573187 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '0.2777777778' to each side of the equation. -0.2777777778 + 0.2777777778 + p = -1.785573187 + 0.2777777778 Combine like terms: -0.2777777778 + 0.2777777778 = 0.0000000000 0.0000000000 + p = -1.785573187 + 0.2777777778 p = -1.785573187 + 0.2777777778 Combine like terms: -1.785573187 + 0.2777777778 = -1.5077954092 p = -1.5077954092 Simplifying p = -1.5077954092

Solution

The solution to the problem is based on the solutions from the subproblems. p = {2.0633509648, -1.5077954092}

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