8p^2+2p-25=0

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Solution for 8p^2+2p-25=0 equation:


Simplifying
8p2 + 2p + -25 = 0

Reorder the terms:
-25 + 2p + 8p2 = 0

Solving
-25 + 2p + 8p2 = 0

Solving for variable 'p'.

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

Divide each side by '8'.
-3.125 + 0.25p + p2 = 0

Move the constant term to the right:

Add '3.125' to each side of the equation.
-3.125 + 0.25p + 3.125 + p2 = 0 + 3.125

Reorder the terms:
-3.125 + 3.125 + 0.25p + p2 = 0 + 3.125

Combine like terms: -3.125 + 3.125 = 0.000
0.000 + 0.25p + p2 = 0 + 3.125
0.25p + p2 = 0 + 3.125

Combine like terms: 0 + 3.125 = 3.125
0.25p + p2 = 3.125

The p term is 0.25p.  Take half its coefficient (0.125).
Square it (0.015625) and add it to both sides.

Add '0.015625' to each side of the equation.
0.25p + 0.015625 + p2 = 3.125 + 0.015625

Reorder the terms:
0.015625 + 0.25p + p2 = 3.125 + 0.015625

Combine like terms: 3.125 + 0.015625 = 3.140625
0.015625 + 0.25p + p2 = 3.140625

Factor a perfect square on the left side:
(p + 0.125)(p + 0.125) = 3.140625

Calculate the square root of the right side: 1.77218086

Break this problem into two subproblems by setting 
(p + 0.125) equal to 1.77218086 and -1.77218086.

Subproblem 1

p + 0.125 = 1.77218086 Simplifying p + 0.125 = 1.77218086 Reorder the terms: 0.125 + p = 1.77218086 Solving 0.125 + p = 1.77218086 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-0.125' to each side of the equation. 0.125 + -0.125 + p = 1.77218086 + -0.125 Combine like terms: 0.125 + -0.125 = 0.000 0.000 + p = 1.77218086 + -0.125 p = 1.77218086 + -0.125 Combine like terms: 1.77218086 + -0.125 = 1.64718086 p = 1.64718086 Simplifying p = 1.64718086

Subproblem 2

p + 0.125 = -1.77218086 Simplifying p + 0.125 = -1.77218086 Reorder the terms: 0.125 + p = -1.77218086 Solving 0.125 + p = -1.77218086 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-0.125' to each side of the equation. 0.125 + -0.125 + p = -1.77218086 + -0.125 Combine like terms: 0.125 + -0.125 = 0.000 0.000 + p = -1.77218086 + -0.125 p = -1.77218086 + -0.125 Combine like terms: -1.77218086 + -0.125 = -1.89718086 p = -1.89718086 Simplifying p = -1.89718086

Solution

The solution to the problem is based on the solutions from the subproblems. p = {1.64718086, -1.89718086}

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