p^2+6p-71=-7

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Solution for p^2+6p-71=-7 equation:


Simplifying
p2 + 6p + -71 = -7

Reorder the terms:
-71 + 6p + p2 = -7

Solving
-71 + 6p + p2 = -7

Solving for variable 'p'.

Reorder the terms:
-71 + 7 + 6p + p2 = -7 + 7

Combine like terms: -71 + 7 = -64
-64 + 6p + p2 = -7 + 7

Combine like terms: -7 + 7 = 0
-64 + 6p + p2 = 0

Begin completing the square.

Move the constant term to the right:

Add '64' to each side of the equation.
-64 + 6p + 64 + p2 = 0 + 64

Reorder the terms:
-64 + 64 + 6p + p2 = 0 + 64

Combine like terms: -64 + 64 = 0
0 + 6p + p2 = 0 + 64
6p + p2 = 0 + 64

Combine like terms: 0 + 64 = 64
6p + p2 = 64

The p term is 6p.  Take half its coefficient (3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
6p + 9 + p2 = 64 + 9

Reorder the terms:
9 + 6p + p2 = 64 + 9

Combine like terms: 64 + 9 = 73
9 + 6p + p2 = 73

Factor a perfect square on the left side:
(p + 3)(p + 3) = 73

Calculate the square root of the right side: 8.544003745

Break this problem into two subproblems by setting 
(p + 3) equal to 8.544003745 and -8.544003745.

Subproblem 1

p + 3 = 8.544003745 Simplifying p + 3 = 8.544003745 Reorder the terms: 3 + p = 8.544003745 Solving 3 + p = 8.544003745 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + p = 8.544003745 + -3 Combine like terms: 3 + -3 = 0 0 + p = 8.544003745 + -3 p = 8.544003745 + -3 Combine like terms: 8.544003745 + -3 = 5.544003745 p = 5.544003745 Simplifying p = 5.544003745

Subproblem 2

p + 3 = -8.544003745 Simplifying p + 3 = -8.544003745 Reorder the terms: 3 + p = -8.544003745 Solving 3 + p = -8.544003745 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + p = -8.544003745 + -3 Combine like terms: 3 + -3 = 0 0 + p = -8.544003745 + -3 p = -8.544003745 + -3 Combine like terms: -8.544003745 + -3 = -11.544003745 p = -11.544003745 Simplifying p = -11.544003745

Solution

The solution to the problem is based on the solutions from the subproblems. p = {5.544003745, -11.544003745}

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