3p^2-6p-19=0

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Solution for 3p^2-6p-19=0 equation:


Simplifying
3p2 + -6p + -19 = 0

Reorder the terms:
-19 + -6p + 3p2 = 0

Solving
-19 + -6p + 3p2 = 0

Solving for variable 'p'.

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

Divide each side by '3'.
-6.333333333 + -2p + p2 = 0

Move the constant term to the right:

Add '6.333333333' to each side of the equation.
-6.333333333 + -2p + 6.333333333 + p2 = 0 + 6.333333333

Reorder the terms:
-6.333333333 + 6.333333333 + -2p + p2 = 0 + 6.333333333

Combine like terms: -6.333333333 + 6.333333333 = 0.000000000
0.000000000 + -2p + p2 = 0 + 6.333333333
-2p + p2 = 0 + 6.333333333

Combine like terms: 0 + 6.333333333 = 6.333333333
-2p + p2 = 6.333333333

The p term is -2p.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2p + 1 + p2 = 6.333333333 + 1

Reorder the terms:
1 + -2p + p2 = 6.333333333 + 1

Combine like terms: 6.333333333 + 1 = 7.333333333
1 + -2p + p2 = 7.333333333

Factor a perfect square on the left side:
(p + -1)(p + -1) = 7.333333333

Calculate the square root of the right side: 2.708012801

Break this problem into two subproblems by setting 
(p + -1) equal to 2.708012801 and -2.708012801.

Subproblem 1

p + -1 = 2.708012801 Simplifying p + -1 = 2.708012801 Reorder the terms: -1 + p = 2.708012801 Solving -1 + p = 2.708012801 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + p = 2.708012801 + 1 Combine like terms: -1 + 1 = 0 0 + p = 2.708012801 + 1 p = 2.708012801 + 1 Combine like terms: 2.708012801 + 1 = 3.708012801 p = 3.708012801 Simplifying p = 3.708012801

Subproblem 2

p + -1 = -2.708012801 Simplifying p + -1 = -2.708012801 Reorder the terms: -1 + p = -2.708012801 Solving -1 + p = -2.708012801 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + p = -2.708012801 + 1 Combine like terms: -1 + 1 = 0 0 + p = -2.708012801 + 1 p = -2.708012801 + 1 Combine like terms: -2.708012801 + 1 = -1.708012801 p = -1.708012801 Simplifying p = -1.708012801

Solution

The solution to the problem is based on the solutions from the subproblems. p = {3.708012801, -1.708012801}

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