p^2+8p-18=10

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Solution for p^2+8p-18=10 equation:


Simplifying
p2 + 8p + -18 = 10

Reorder the terms:
-18 + 8p + p2 = 10

Solving
-18 + 8p + p2 = 10

Solving for variable 'p'.

Reorder the terms:
-18 + -10 + 8p + p2 = 10 + -10

Combine like terms: -18 + -10 = -28
-28 + 8p + p2 = 10 + -10

Combine like terms: 10 + -10 = 0
-28 + 8p + p2 = 0

Begin completing the square.

Move the constant term to the right:

Add '28' to each side of the equation.
-28 + 8p + 28 + p2 = 0 + 28

Reorder the terms:
-28 + 28 + 8p + p2 = 0 + 28

Combine like terms: -28 + 28 = 0
0 + 8p + p2 = 0 + 28
8p + p2 = 0 + 28

Combine like terms: 0 + 28 = 28
8p + p2 = 28

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 = 28 + 16

Reorder the terms:
16 + 8p + p2 = 28 + 16

Combine like terms: 28 + 16 = 44
16 + 8p + p2 = 44

Factor a perfect square on the left side:
(p + 4)(p + 4) = 44

Calculate the square root of the right side: 6.633249581

Break this problem into two subproblems by setting 
(p + 4) equal to 6.633249581 and -6.633249581.

Subproblem 1

p + 4 = 6.633249581 Simplifying p + 4 = 6.633249581 Reorder the terms: 4 + p = 6.633249581 Solving 4 + p = 6.633249581 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 = 6.633249581 + -4 Combine like terms: 4 + -4 = 0 0 + p = 6.633249581 + -4 p = 6.633249581 + -4 Combine like terms: 6.633249581 + -4 = 2.633249581 p = 2.633249581 Simplifying p = 2.633249581

Subproblem 2

p + 4 = -6.633249581 Simplifying p + 4 = -6.633249581 Reorder the terms: 4 + p = -6.633249581 Solving 4 + p = -6.633249581 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 = -6.633249581 + -4 Combine like terms: 4 + -4 = 0 0 + p = -6.633249581 + -4 p = -6.633249581 + -4 Combine like terms: -6.633249581 + -4 = -10.633249581 p = -10.633249581 Simplifying p = -10.633249581

Solution

The solution to the problem is based on the solutions from the subproblems. p = {2.633249581, -10.633249581}

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