7p^2-12p-24=0

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Solution for 7p^2-12p-24=0 equation:


Simplifying
7p2 + -12p + -24 = 0

Reorder the terms:
-24 + -12p + 7p2 = 0

Solving
-24 + -12p + 7p2 = 0

Solving for variable 'p'.

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

Divide each side by '7'.
-3.428571429 + -1.714285714p + p2 = 0

Move the constant term to the right:

Add '3.428571429' to each side of the equation.
-3.428571429 + -1.714285714p + 3.428571429 + p2 = 0 + 3.428571429

Reorder the terms:
-3.428571429 + 3.428571429 + -1.714285714p + p2 = 0 + 3.428571429

Combine like terms: -3.428571429 + 3.428571429 = 0.000000000
0.000000000 + -1.714285714p + p2 = 0 + 3.428571429
-1.714285714p + p2 = 0 + 3.428571429

Combine like terms: 0 + 3.428571429 = 3.428571429
-1.714285714p + p2 = 3.428571429

The p term is -1.714285714p.  Take half its coefficient (-0.857142857).
Square it (0.7346938773) and add it to both sides.

Add '0.7346938773' to each side of the equation.
-1.714285714p + 0.7346938773 + p2 = 3.428571429 + 0.7346938773

Reorder the terms:
0.7346938773 + -1.714285714p + p2 = 3.428571429 + 0.7346938773

Combine like terms: 3.428571429 + 0.7346938773 = 4.1632653063
0.7346938773 + -1.714285714p + p2 = 4.1632653063

Factor a perfect square on the left side:
(p + -0.857142857)(p + -0.857142857) = 4.1632653063

Calculate the square root of the right side: 2.040408122

Break this problem into two subproblems by setting 
(p + -0.857142857) equal to 2.040408122 and -2.040408122.

Subproblem 1

p + -0.857142857 = 2.040408122 Simplifying p + -0.857142857 = 2.040408122 Reorder the terms: -0.857142857 + p = 2.040408122 Solving -0.857142857 + p = 2.040408122 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '0.857142857' to each side of the equation. -0.857142857 + 0.857142857 + p = 2.040408122 + 0.857142857 Combine like terms: -0.857142857 + 0.857142857 = 0.000000000 0.000000000 + p = 2.040408122 + 0.857142857 p = 2.040408122 + 0.857142857 Combine like terms: 2.040408122 + 0.857142857 = 2.897550979 p = 2.897550979 Simplifying p = 2.897550979

Subproblem 2

p + -0.857142857 = -2.040408122 Simplifying p + -0.857142857 = -2.040408122 Reorder the terms: -0.857142857 + p = -2.040408122 Solving -0.857142857 + p = -2.040408122 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '0.857142857' to each side of the equation. -0.857142857 + 0.857142857 + p = -2.040408122 + 0.857142857 Combine like terms: -0.857142857 + 0.857142857 = 0.000000000 0.000000000 + p = -2.040408122 + 0.857142857 p = -2.040408122 + 0.857142857 Combine like terms: -2.040408122 + 0.857142857 = -1.183265265 p = -1.183265265 Simplifying p = -1.183265265

Solution

The solution to the problem is based on the solutions from the subproblems. p = {2.897550979, -1.183265265}

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