15p^2+24p+8=0

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Solution for 15p^2+24p+8=0 equation:


Simplifying
15p2 + 24p + 8 = 0

Reorder the terms:
8 + 24p + 15p2 = 0

Solving
8 + 24p + 15p2 = 0

Solving for variable 'p'.

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

Divide each side by '15'.
0.5333333333 + 1.6p + p2 = 0

Move the constant term to the right:

Add '-0.5333333333' to each side of the equation.
0.5333333333 + 1.6p + -0.5333333333 + p2 = 0 + -0.5333333333

Reorder the terms:
0.5333333333 + -0.5333333333 + 1.6p + p2 = 0 + -0.5333333333

Combine like terms: 0.5333333333 + -0.5333333333 = 0.0000000000
0.0000000000 + 1.6p + p2 = 0 + -0.5333333333
1.6p + p2 = 0 + -0.5333333333

Combine like terms: 0 + -0.5333333333 = -0.5333333333
1.6p + p2 = -0.5333333333

The p term is 1.6p.  Take half its coefficient (0.8).
Square it (0.64) and add it to both sides.

Add '0.64' to each side of the equation.
1.6p + 0.64 + p2 = -0.5333333333 + 0.64

Reorder the terms:
0.64 + 1.6p + p2 = -0.5333333333 + 0.64

Combine like terms: -0.5333333333 + 0.64 = 0.1066666667
0.64 + 1.6p + p2 = 0.1066666667

Factor a perfect square on the left side:
(p + 0.8)(p + 0.8) = 0.1066666667

Calculate the square root of the right side: 0.326598632

Break this problem into two subproblems by setting 
(p + 0.8) equal to 0.326598632 and -0.326598632.

Subproblem 1

p + 0.8 = 0.326598632 Simplifying p + 0.8 = 0.326598632 Reorder the terms: 0.8 + p = 0.326598632 Solving 0.8 + p = 0.326598632 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-0.8' to each side of the equation. 0.8 + -0.8 + p = 0.326598632 + -0.8 Combine like terms: 0.8 + -0.8 = 0.0 0.0 + p = 0.326598632 + -0.8 p = 0.326598632 + -0.8 Combine like terms: 0.326598632 + -0.8 = -0.473401368 p = -0.473401368 Simplifying p = -0.473401368

Subproblem 2

p + 0.8 = -0.326598632 Simplifying p + 0.8 = -0.326598632 Reorder the terms: 0.8 + p = -0.326598632 Solving 0.8 + p = -0.326598632 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-0.8' to each side of the equation. 0.8 + -0.8 + p = -0.326598632 + -0.8 Combine like terms: 0.8 + -0.8 = 0.0 0.0 + p = -0.326598632 + -0.8 p = -0.326598632 + -0.8 Combine like terms: -0.326598632 + -0.8 = -1.126598632 p = -1.126598632 Simplifying p = -1.126598632

Solution

The solution to the problem is based on the solutions from the subproblems. p = {-0.473401368, -1.126598632}

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