p^2-8p-39=-10

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Solution for p^2-8p-39=-10 equation:


Simplifying
p2 + -8p + -39 = -10

Reorder the terms:
-39 + -8p + p2 = -10

Solving
-39 + -8p + p2 = -10

Solving for variable 'p'.

Reorder the terms:
-39 + 10 + -8p + p2 = -10 + 10

Combine like terms: -39 + 10 = -29
-29 + -8p + p2 = -10 + 10

Combine like terms: -10 + 10 = 0
-29 + -8p + p2 = 0

Begin completing the square.

Move the constant term to the right:

Add '29' to each side of the equation.
-29 + -8p + 29 + p2 = 0 + 29

Reorder the terms:
-29 + 29 + -8p + p2 = 0 + 29

Combine like terms: -29 + 29 = 0
0 + -8p + p2 = 0 + 29
-8p + p2 = 0 + 29

Combine like terms: 0 + 29 = 29
-8p + p2 = 29

The p term is -8p.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8p + 16 + p2 = 29 + 16

Reorder the terms:
16 + -8p + p2 = 29 + 16

Combine like terms: 29 + 16 = 45
16 + -8p + p2 = 45

Factor a perfect square on the left side:
(p + -4)(p + -4) = 45

Calculate the square root of the right side: 6.708203933

Break this problem into two subproblems by setting 
(p + -4) equal to 6.708203933 and -6.708203933.

Subproblem 1

p + -4 = 6.708203933 Simplifying p + -4 = 6.708203933 Reorder the terms: -4 + p = 6.708203933 Solving -4 + p = 6.708203933 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + p = 6.708203933 + 4 Combine like terms: -4 + 4 = 0 0 + p = 6.708203933 + 4 p = 6.708203933 + 4 Combine like terms: 6.708203933 + 4 = 10.708203933 p = 10.708203933 Simplifying p = 10.708203933

Subproblem 2

p + -4 = -6.708203933 Simplifying p + -4 = -6.708203933 Reorder the terms: -4 + p = -6.708203933 Solving -4 + p = -6.708203933 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + p = -6.708203933 + 4 Combine like terms: -4 + 4 = 0 0 + p = -6.708203933 + 4 p = -6.708203933 + 4 Combine like terms: -6.708203933 + 4 = -2.708203933 p = -2.708203933 Simplifying p = -2.708203933

Solution

The solution to the problem is based on the solutions from the subproblems. p = {10.708203933, -2.708203933}

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