p^2+2p+1-6p=85

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Solution for p^2+2p+1-6p=85 equation:


Simplifying
p2 + 2p + 1 + -6p = 85

Reorder the terms:
1 + 2p + -6p + p2 = 85

Combine like terms: 2p + -6p = -4p
1 + -4p + p2 = 85

Solving
1 + -4p + p2 = 85

Solving for variable 'p'.

Reorder the terms:
1 + -85 + -4p + p2 = 85 + -85

Combine like terms: 1 + -85 = -84
-84 + -4p + p2 = 85 + -85

Combine like terms: 85 + -85 = 0
-84 + -4p + p2 = 0

Begin completing the square.

Move the constant term to the right:

Add '84' to each side of the equation.
-84 + -4p + 84 + p2 = 0 + 84

Reorder the terms:
-84 + 84 + -4p + p2 = 0 + 84

Combine like terms: -84 + 84 = 0
0 + -4p + p2 = 0 + 84
-4p + p2 = 0 + 84

Combine like terms: 0 + 84 = 84
-4p + p2 = 84

The p term is -4p.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4p + 4 + p2 = 84 + 4

Reorder the terms:
4 + -4p + p2 = 84 + 4

Combine like terms: 84 + 4 = 88
4 + -4p + p2 = 88

Factor a perfect square on the left side:
(p + -2)(p + -2) = 88

Calculate the square root of the right side: 9.38083152

Break this problem into two subproblems by setting 
(p + -2) equal to 9.38083152 and -9.38083152.

Subproblem 1

p + -2 = 9.38083152 Simplifying p + -2 = 9.38083152 Reorder the terms: -2 + p = 9.38083152 Solving -2 + p = 9.38083152 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + p = 9.38083152 + 2 Combine like terms: -2 + 2 = 0 0 + p = 9.38083152 + 2 p = 9.38083152 + 2 Combine like terms: 9.38083152 + 2 = 11.38083152 p = 11.38083152 Simplifying p = 11.38083152

Subproblem 2

p + -2 = -9.38083152 Simplifying p + -2 = -9.38083152 Reorder the terms: -2 + p = -9.38083152 Solving -2 + p = -9.38083152 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + p = -9.38083152 + 2 Combine like terms: -2 + 2 = 0 0 + p = -9.38083152 + 2 p = -9.38083152 + 2 Combine like terms: -9.38083152 + 2 = -7.38083152 p = -7.38083152 Simplifying p = -7.38083152

Solution

The solution to the problem is based on the solutions from the subproblems. p = {11.38083152, -7.38083152}

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