8p^2+7=16p

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Solution for 8p^2+7=16p equation:


Simplifying
8p2 + 7 = 16p

Reorder the terms:
7 + 8p2 = 16p

Solving
7 + 8p2 = 16p

Solving for variable 'p'.

Reorder the terms:
7 + -16p + 8p2 = 16p + -16p

Combine like terms: 16p + -16p = 0
7 + -16p + 8p2 = 0

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

Divide each side by '8'.
0.875 + -2p + p2 = 0

Move the constant term to the right:

Add '-0.875' to each side of the equation.
0.875 + -2p + -0.875 + p2 = 0 + -0.875

Reorder the terms:
0.875 + -0.875 + -2p + p2 = 0 + -0.875

Combine like terms: 0.875 + -0.875 = 0.000
0.000 + -2p + p2 = 0 + -0.875
-2p + p2 = 0 + -0.875

Combine like terms: 0 + -0.875 = -0.875
-2p + p2 = -0.875

The p term is -2p.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2p + 1 + p2 = -0.875 + 1

Reorder the terms:
1 + -2p + p2 = -0.875 + 1

Combine like terms: -0.875 + 1 = 0.125
1 + -2p + p2 = 0.125

Factor a perfect square on the left side:
(p + -1)(p + -1) = 0.125

Calculate the square root of the right side: 0.353553391

Break this problem into two subproblems by setting 
(p + -1) equal to 0.353553391 and -0.353553391.

Subproblem 1

p + -1 = 0.353553391 Simplifying p + -1 = 0.353553391 Reorder the terms: -1 + p = 0.353553391 Solving -1 + p = 0.353553391 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + p = 0.353553391 + 1 Combine like terms: -1 + 1 = 0 0 + p = 0.353553391 + 1 p = 0.353553391 + 1 Combine like terms: 0.353553391 + 1 = 1.353553391 p = 1.353553391 Simplifying p = 1.353553391

Subproblem 2

p + -1 = -0.353553391 Simplifying p + -1 = -0.353553391 Reorder the terms: -1 + p = -0.353553391 Solving -1 + p = -0.353553391 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + p = -0.353553391 + 1 Combine like terms: -1 + 1 = 0 0 + p = -0.353553391 + 1 p = -0.353553391 + 1 Combine like terms: -0.353553391 + 1 = 0.646446609 p = 0.646446609 Simplifying p = 0.646446609

Solution

The solution to the problem is based on the solutions from the subproblems. p = {1.353553391, 0.646446609}

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