p^2-10p-84=-10

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Solution for p^2-10p-84=-10 equation:


Simplifying
p2 + -10p + -84 = -10

Reorder the terms:
-84 + -10p + p2 = -10

Solving
-84 + -10p + p2 = -10

Solving for variable 'p'.

Reorder the terms:
-84 + 10 + -10p + p2 = -10 + 10

Combine like terms: -84 + 10 = -74
-74 + -10p + p2 = -10 + 10

Combine like terms: -10 + 10 = 0
-74 + -10p + p2 = 0

Begin completing the square.

Move the constant term to the right:

Add '74' to each side of the equation.
-74 + -10p + 74 + p2 = 0 + 74

Reorder the terms:
-74 + 74 + -10p + p2 = 0 + 74

Combine like terms: -74 + 74 = 0
0 + -10p + p2 = 0 + 74
-10p + p2 = 0 + 74

Combine like terms: 0 + 74 = 74
-10p + p2 = 74

The p term is -10p.  Take half its coefficient (-5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
-10p + 25 + p2 = 74 + 25

Reorder the terms:
25 + -10p + p2 = 74 + 25

Combine like terms: 74 + 25 = 99
25 + -10p + p2 = 99

Factor a perfect square on the left side:
(p + -5)(p + -5) = 99

Calculate the square root of the right side: 9.949874371

Break this problem into two subproblems by setting 
(p + -5) equal to 9.949874371 and -9.949874371.

Subproblem 1

p + -5 = 9.949874371 Simplifying p + -5 = 9.949874371 Reorder the terms: -5 + p = 9.949874371 Solving -5 + p = 9.949874371 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + p = 9.949874371 + 5 Combine like terms: -5 + 5 = 0 0 + p = 9.949874371 + 5 p = 9.949874371 + 5 Combine like terms: 9.949874371 + 5 = 14.949874371 p = 14.949874371 Simplifying p = 14.949874371

Subproblem 2

p + -5 = -9.949874371 Simplifying p + -5 = -9.949874371 Reorder the terms: -5 + p = -9.949874371 Solving -5 + p = -9.949874371 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + p = -9.949874371 + 5 Combine like terms: -5 + 5 = 0 0 + p = -9.949874371 + 5 p = -9.949874371 + 5 Combine like terms: -9.949874371 + 5 = -4.949874371 p = -4.949874371 Simplifying p = -4.949874371

Solution

The solution to the problem is based on the solutions from the subproblems. p = {14.949874371, -4.949874371}

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