5p^2-24p-80=0

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Solution for 5p^2-24p-80=0 equation:


Simplifying
5p2 + -24p + -80 = 0

Reorder the terms:
-80 + -24p + 5p2 = 0

Solving
-80 + -24p + 5p2 = 0

Solving for variable 'p'.

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

Divide each side by '5'.
-16 + -4.8p + p2 = 0

Move the constant term to the right:

Add '16' to each side of the equation.
-16 + -4.8p + 16 + p2 = 0 + 16

Reorder the terms:
-16 + 16 + -4.8p + p2 = 0 + 16

Combine like terms: -16 + 16 = 0
0 + -4.8p + p2 = 0 + 16
-4.8p + p2 = 0 + 16

Combine like terms: 0 + 16 = 16
-4.8p + p2 = 16

The p term is -4.8p.  Take half its coefficient (-2.4).
Square it (5.76) and add it to both sides.

Add '5.76' to each side of the equation.
-4.8p + 5.76 + p2 = 16 + 5.76

Reorder the terms:
5.76 + -4.8p + p2 = 16 + 5.76

Combine like terms: 16 + 5.76 = 21.76
5.76 + -4.8p + p2 = 21.76

Factor a perfect square on the left side:
(p + -2.4)(p + -2.4) = 21.76

Calculate the square root of the right side: 4.664761516

Break this problem into two subproblems by setting 
(p + -2.4) equal to 4.664761516 and -4.664761516.

Subproblem 1

p + -2.4 = 4.664761516 Simplifying p + -2.4 = 4.664761516 Reorder the terms: -2.4 + p = 4.664761516 Solving -2.4 + p = 4.664761516 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '2.4' to each side of the equation. -2.4 + 2.4 + p = 4.664761516 + 2.4 Combine like terms: -2.4 + 2.4 = 0.0 0.0 + p = 4.664761516 + 2.4 p = 4.664761516 + 2.4 Combine like terms: 4.664761516 + 2.4 = 7.064761516 p = 7.064761516 Simplifying p = 7.064761516

Subproblem 2

p + -2.4 = -4.664761516 Simplifying p + -2.4 = -4.664761516 Reorder the terms: -2.4 + p = -4.664761516 Solving -2.4 + p = -4.664761516 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '2.4' to each side of the equation. -2.4 + 2.4 + p = -4.664761516 + 2.4 Combine like terms: -2.4 + 2.4 = 0.0 0.0 + p = -4.664761516 + 2.4 p = -4.664761516 + 2.4 Combine like terms: -4.664761516 + 2.4 = -2.264761516 p = -2.264761516 Simplifying p = -2.264761516

Solution

The solution to the problem is based on the solutions from the subproblems. p = {7.064761516, -2.264761516}

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