32p^2-31p-40=0

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Solution for 32p^2-31p-40=0 equation:


Simplifying
32p2 + -31p + -40 = 0

Reorder the terms:
-40 + -31p + 32p2 = 0

Solving
-40 + -31p + 32p2 = 0

Solving for variable 'p'.

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

Divide each side by '32'.
-1.25 + -0.96875p + p2 = 0

Move the constant term to the right:

Add '1.25' to each side of the equation.
-1.25 + -0.96875p + 1.25 + p2 = 0 + 1.25

Reorder the terms:
-1.25 + 1.25 + -0.96875p + p2 = 0 + 1.25

Combine like terms: -1.25 + 1.25 = 0.00
0.00 + -0.96875p + p2 = 0 + 1.25
-0.96875p + p2 = 0 + 1.25

Combine like terms: 0 + 1.25 = 1.25
-0.96875p + p2 = 1.25

The p term is -0.96875p.  Take half its coefficient (-0.484375).
Square it (0.2346191406) and add it to both sides.

Add '0.2346191406' to each side of the equation.
-0.96875p + 0.2346191406 + p2 = 1.25 + 0.2346191406

Reorder the terms:
0.2346191406 + -0.96875p + p2 = 1.25 + 0.2346191406

Combine like terms: 1.25 + 0.2346191406 = 1.4846191406
0.2346191406 + -0.96875p + p2 = 1.4846191406

Factor a perfect square on the left side:
(p + -0.484375)(p + -0.484375) = 1.4846191406

Calculate the square root of the right side: 1.218449482

Break this problem into two subproblems by setting 
(p + -0.484375) equal to 1.218449482 and -1.218449482.

Subproblem 1

p + -0.484375 = 1.218449482 Simplifying p + -0.484375 = 1.218449482 Reorder the terms: -0.484375 + p = 1.218449482 Solving -0.484375 + p = 1.218449482 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '0.484375' to each side of the equation. -0.484375 + 0.484375 + p = 1.218449482 + 0.484375 Combine like terms: -0.484375 + 0.484375 = 0.000000 0.000000 + p = 1.218449482 + 0.484375 p = 1.218449482 + 0.484375 Combine like terms: 1.218449482 + 0.484375 = 1.702824482 p = 1.702824482 Simplifying p = 1.702824482

Subproblem 2

p + -0.484375 = -1.218449482 Simplifying p + -0.484375 = -1.218449482 Reorder the terms: -0.484375 + p = -1.218449482 Solving -0.484375 + p = -1.218449482 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '0.484375' to each side of the equation. -0.484375 + 0.484375 + p = -1.218449482 + 0.484375 Combine like terms: -0.484375 + 0.484375 = 0.000000 0.000000 + p = -1.218449482 + 0.484375 p = -1.218449482 + 0.484375 Combine like terms: -1.218449482 + 0.484375 = -0.734074482 p = -0.734074482 Simplifying p = -0.734074482

Solution

The solution to the problem is based on the solutions from the subproblems. p = {1.702824482, -0.734074482}

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