p^2-2p=12

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Solution for p^2-2p=12 equation:


Simplifying
p2 + -2p = 12

Reorder the terms:
-2p + p2 = 12

Solving
-2p + p2 = 12

Solving for variable 'p'.

Reorder the terms:
-12 + -2p + p2 = 12 + -12

Combine like terms: 12 + -12 = 0
-12 + -2p + p2 = 0

Begin completing the square.

Move the constant term to the right:

Add '12' to each side of the equation.
-12 + -2p + 12 + p2 = 0 + 12

Reorder the terms:
-12 + 12 + -2p + p2 = 0 + 12

Combine like terms: -12 + 12 = 0
0 + -2p + p2 = 0 + 12
-2p + p2 = 0 + 12

Combine like terms: 0 + 12 = 12
-2p + p2 = 12

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 = 12 + 1

Reorder the terms:
1 + -2p + p2 = 12 + 1

Combine like terms: 12 + 1 = 13
1 + -2p + p2 = 13

Factor a perfect square on the left side:
(p + -1)(p + -1) = 13

Calculate the square root of the right side: 3.605551275

Break this problem into two subproblems by setting 
(p + -1) equal to 3.605551275 and -3.605551275.

Subproblem 1

p + -1 = 3.605551275 Simplifying p + -1 = 3.605551275 Reorder the terms: -1 + p = 3.605551275 Solving -1 + p = 3.605551275 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 = 3.605551275 + 1 Combine like terms: -1 + 1 = 0 0 + p = 3.605551275 + 1 p = 3.605551275 + 1 Combine like terms: 3.605551275 + 1 = 4.605551275 p = 4.605551275 Simplifying p = 4.605551275

Subproblem 2

p + -1 = -3.605551275 Simplifying p + -1 = -3.605551275 Reorder the terms: -1 + p = -3.605551275 Solving -1 + p = -3.605551275 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 = -3.605551275 + 1 Combine like terms: -1 + 1 = 0 0 + p = -3.605551275 + 1 p = -3.605551275 + 1 Combine like terms: -3.605551275 + 1 = -2.605551275 p = -2.605551275 Simplifying p = -2.605551275

Solution

The solution to the problem is based on the solutions from the subproblems. p = {4.605551275, -2.605551275}

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